/* Copyright (C) 2000, 2003 Manuel Novoa III
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/* Copyright (C) 2000, 2003 Manuel Novoa III
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*
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*
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* This library is free software; you can redistribute it and/or
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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* version 2 of the License, or (at your option) any later version.
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*
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*
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* This library is distributed in the hope that it will be useful,
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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* Library General Public License for more details.
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*
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*
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* You should have received a copy of the GNU Library General Public
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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*/
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/* Notes:
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/* Notes:
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*
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*
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* The primary objective of this implementation was minimal size and
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* The primary objective of this implementation was minimal size and
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* portablility, while providing robustness and resonable accuracy.
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* portablility, while providing robustness and resonable accuracy.
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*
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*
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* This implementation depends on IEEE floating point behavior and expects
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* This implementation depends on IEEE floating point behavior and expects
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* to be able to generate +/- infinity as a result.
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* to be able to generate +/- infinity as a result.
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*
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*
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* There are a number of compile-time options below.
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* There are a number of compile-time options below.
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*/
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*/
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/* July 27, 2003
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/* July 27, 2003
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*
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*
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* General cleanup and some minor size optimizations.
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* General cleanup and some minor size optimizations.
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* Change implementation to support __strtofpmax() rather than strtod().
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* Change implementation to support __strtofpmax() rather than strtod().
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* Now all the strto{floating pt}() funcs are implemented in terms of
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* Now all the strto{floating pt}() funcs are implemented in terms of
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* of the internal __strtofpmax() function.
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* of the internal __strtofpmax() function.
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* Support "nan", "inf", and "infinity" strings (case-insensitive).
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* Support "nan", "inf", and "infinity" strings (case-insensitive).
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* Support hexadecimal floating point notation.
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* Support hexadecimal floating point notation.
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* Support wchar variants.
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* Support wchar variants.
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* Support xlocale variants.
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* Support xlocale variants.
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*
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*
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* TODO:
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* TODO:
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*
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*
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* Consider accumulating blocks of digits in longs to save floating pt mults.
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* Consider accumulating blocks of digits in longs to save floating pt mults.
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* This would likely be much better on anything that only supported floats
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* This would likely be much better on anything that only supported floats
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* where DECIMAL_DIG == 9. Actually, if floats have FLT_MAX_10_EXP == 38,
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* where DECIMAL_DIG == 9. Actually, if floats have FLT_MAX_10_EXP == 38,
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* we could calculate almost all the exponent multipliers (p_base) in
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* we could calculate almost all the exponent multipliers (p_base) in
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* long arithmetic as well.
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* long arithmetic as well.
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*/
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*/
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/**********************************************************************/
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/**********************************************************************/
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/* OPTIONS */
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/* OPTIONS */
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/**********************************************************************/
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/**********************************************************************/
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/* Defined if we want to recognize "nan", "inf", and "infinity". (C99) */
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/* Defined if we want to recognize "nan", "inf", and "infinity". (C99) */
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#define _STRTOD_NAN_INF_STRINGS 1
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#define _STRTOD_NAN_INF_STRINGS 1
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/* Defined if we want support hexadecimal floating point notation. (C99) */
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/* Defined if we want support hexadecimal floating point notation. (C99) */
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/* Note! Now controlled by uClibc configuration. See below. */
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/* Note! Now controlled by uClibc configuration. See below. */
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#define _STRTOD_HEXADECIMAL_FLOATS 1
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#define _STRTOD_HEXADECIMAL_FLOATS 1
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/* Defined if we want to scale with a O(log2(exp)) multiplications.
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/* Defined if we want to scale with a O(log2(exp)) multiplications.
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* This is generally a good thing to do unless you are really tight
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* This is generally a good thing to do unless you are really tight
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* on space and do not expect to convert values of large magnitude. */
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* on space and do not expect to convert values of large magnitude. */
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#define _STRTOD_LOG_SCALING 1
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#define _STRTOD_LOG_SCALING 1
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/* WARNING!!! WARNING!!! WARNING!!! WARNING!!! WARNING!!!
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/* WARNING!!! WARNING!!! WARNING!!! WARNING!!! WARNING!!!
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*
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*
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* Clearing any of the options below this point is not advised (or tested).
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* Clearing any of the options below this point is not advised (or tested).
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*
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*
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* WARNING!!! WARNING!!! WARNING!!! WARNING!!! WARNING!!! */
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* WARNING!!! WARNING!!! WARNING!!! WARNING!!! WARNING!!! */
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/* Defined if we want strtod to set errno appropriately. */
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/* Defined if we want strtod to set errno appropriately. */
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/* NOTE: Implies all options below. */
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/* NOTE: Implies all options below. */
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#define _STRTOD_ERRNO 1
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#define _STRTOD_ERRNO 1
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/* Defined if we want support for the endptr arg. */
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/* Defined if we want support for the endptr arg. */
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/* Implied by _STRTOD_ERRNO. */
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/* Implied by _STRTOD_ERRNO. */
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#define _STRTOD_ENDPTR 1
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#define _STRTOD_ENDPTR 1
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/* Defined if we want to prevent overflow in accumulating the exponent. */
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/* Defined if we want to prevent overflow in accumulating the exponent. */
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/* Implied by _STRTOD_ERRNO. */
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/* Implied by _STRTOD_ERRNO. */
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#define _STRTOD_RESTRICT_EXP 1
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#define _STRTOD_RESTRICT_EXP 1
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/* Defined if we want to process mantissa digits more intelligently. */
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/* Defined if we want to process mantissa digits more intelligently. */
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/* Implied by _STRTOD_ERRNO. */
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/* Implied by _STRTOD_ERRNO. */
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#define _STRTOD_RESTRICT_DIGITS 1
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#define _STRTOD_RESTRICT_DIGITS 1
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/* Defined if we want to skip scaling 0 for the exponent. */
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/* Defined if we want to skip scaling 0 for the exponent. */
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/* Implied by _STRTOD_ERRNO. */
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/* Implied by _STRTOD_ERRNO. */
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#define _STRTOD_ZERO_CHECK 1
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#define _STRTOD_ZERO_CHECK 1
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/**********************************************************************/
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/**********************************************************************/
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/* Don't change anything that follows. */
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/* Don't change anything that follows. */
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/**********************************************************************/
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/**********************************************************************/
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#ifdef _STRTOD_ERRNO
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#ifdef _STRTOD_ERRNO
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#undef _STRTOD_ENDPTR
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#undef _STRTOD_ENDPTR
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#undef _STRTOD_RESTRICT_EXP
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#undef _STRTOD_RESTRICT_EXP
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#undef _STRTOD_RESTRICT_DIGITS
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#undef _STRTOD_RESTRICT_DIGITS
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#undef _STRTOD_ZERO_CHECK
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#undef _STRTOD_ZERO_CHECK
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#define _STRTOD_ENDPTR 1
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#define _STRTOD_ENDPTR 1
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#define _STRTOD_RESTRICT_EXP 1
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#define _STRTOD_RESTRICT_EXP 1
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#define _STRTOD_RESTRICT_DIGITS 1
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#define _STRTOD_RESTRICT_DIGITS 1
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#define _STRTOD_ZERO_CHECK 1
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#define _STRTOD_ZERO_CHECK 1
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#endif
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#endif
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/**********************************************************************/
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/**********************************************************************/
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#define _ISOC99_SOURCE 1
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#define _ISOC99_SOURCE 1
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#define _GNU_SOURCE
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#define _GNU_SOURCE
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#include <stdlib.h>
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#include <stdlib.h>
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#include <string.h>
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#include <string.h>
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#include <ctype.h>
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#include <ctype.h>
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#include <errno.h>
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#include <errno.h>
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#include <limits.h>
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#include <limits.h>
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#include <float.h>
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#include <float.h>
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#include <bits/uClibc_fpmax.h>
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#include <bits/uClibc_fpmax.h>
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#include <locale.h>
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#include <locale.h>
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#ifdef __UCLIBC_HAS_WCHAR__
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#ifdef __UCLIBC_HAS_WCHAR__
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#include <wchar.h>
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#include <wchar.h>
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#include <wctype.h>
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#include <wctype.h>
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#include <bits/uClibc_uwchar.h>
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#include <bits/uClibc_uwchar.h>
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#endif
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#endif
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#ifdef __UCLIBC_HAS_XLOCALE__
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#ifdef __UCLIBC_HAS_XLOCALE__
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#include <xlocale.h>
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#include <xlocale.h>
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#endif /* __UCLIBC_HAS_XLOCALE__ */
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#endif /* __UCLIBC_HAS_XLOCALE__ */
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/* Handle _STRTOD_HEXADECIMAL_FLOATS via uClibc config now. */
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/* Handle _STRTOD_HEXADECIMAL_FLOATS via uClibc config now. */
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#undef _STRTOD_HEXADECIMAL_FLOATS
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#undef _STRTOD_HEXADECIMAL_FLOATS
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#ifdef __UCLIBC_HAS_HEXADECIMAL_FLOATS__
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#ifdef __UCLIBC_HAS_HEXADECIMAL_FLOATS__
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#define _STRTOD_HEXADECIMAL_FLOATS 1
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#define _STRTOD_HEXADECIMAL_FLOATS 1
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#endif /* __UCLIBC_HAS_HEXADECIMAL_FLOATS__ */
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#endif /* __UCLIBC_HAS_HEXADECIMAL_FLOATS__ */
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/**********************************************************************/
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/**********************************************************************/
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#undef _STRTOD_FPMAX
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#undef _STRTOD_FPMAX
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#if FPMAX_TYPE == 3
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#if FPMAX_TYPE == 3
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#define NEED_STRTOLD_WRAPPER
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#define NEED_STRTOLD_WRAPPER
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#define NEED_STRTOD_WRAPPER
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#define NEED_STRTOD_WRAPPER
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#define NEED_STRTOF_WRAPPER
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#define NEED_STRTOF_WRAPPER
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#elif FPMAX_TYPE == 2
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#elif FPMAX_TYPE == 2
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#define NEED_STRTOD_WRAPPER
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#define NEED_STRTOD_WRAPPER
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#define NEED_STRTOF_WRAPPER
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#define NEED_STRTOF_WRAPPER
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#elif FPMAX_TYPE == 1
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#elif FPMAX_TYPE == 1
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#define NEED_STRTOF_WRAPPER
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#define NEED_STRTOF_WRAPPER
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#else
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#else
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#error unknown FPMAX_TYPE!
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#error unknown FPMAX_TYPE!
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#endif
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#endif
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extern void __fp_range_check(__fpmax_t y, __fpmax_t x);
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extern void __fp_range_check(__fpmax_t y, __fpmax_t x);
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/**********************************************************************/
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/**********************************************************************/
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#ifdef _STRTOD_RESTRICT_DIGITS
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#ifdef _STRTOD_RESTRICT_DIGITS
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#define EXP_DENORM_ADJUST DECIMAL_DIG
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#define EXP_DENORM_ADJUST DECIMAL_DIG
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#define MAX_ALLOWED_EXP (DECIMAL_DIG + EXP_DENORM_ADJUST - FPMAX_MIN_10_EXP)
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#define MAX_ALLOWED_EXP (DECIMAL_DIG + EXP_DENORM_ADJUST - FPMAX_MIN_10_EXP)
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#if MAX_ALLOWED_EXP > INT_MAX
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#if MAX_ALLOWED_EXP > INT_MAX
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#error size assumption violated for MAX_ALLOWED_EXP
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#error size assumption violated for MAX_ALLOWED_EXP
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#endif
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#endif
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#else
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#else
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/* We want some excess if we're not restricting mantissa digits. */
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/* We want some excess if we're not restricting mantissa digits. */
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#define MAX_ALLOWED_EXP ((20 - FPMAX_MIN_10_EXP) * 2)
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#define MAX_ALLOWED_EXP ((20 - FPMAX_MIN_10_EXP) * 2)
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#endif
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#endif
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#if defined(_STRTOD_RESTRICT_DIGITS) || defined(_STRTOD_ENDPTR) || defined(_STRTOD_HEXADECIMAL_FLOATS)
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#if defined(_STRTOD_RESTRICT_DIGITS) || defined(_STRTOD_ENDPTR) || defined(_STRTOD_HEXADECIMAL_FLOATS)
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#undef _STRTOD_NEED_NUM_DIGITS
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#undef _STRTOD_NEED_NUM_DIGITS
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#define _STRTOD_NEED_NUM_DIGITS 1
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#define _STRTOD_NEED_NUM_DIGITS 1
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#endif
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#endif
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/**********************************************************************/
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/**********************************************************************/
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#if defined(L___strtofpmax) || defined(L___strtofpmax_l) || defined(L___wcstofpmax) || defined(L___wcstofpmax_l)
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#if defined(L___strtofpmax) || defined(L___strtofpmax_l) || defined(L___wcstofpmax) || defined(L___wcstofpmax_l)
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#if defined(L___wcstofpmax) || defined(L___wcstofpmax_l)
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#if defined(L___wcstofpmax) || defined(L___wcstofpmax_l)
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#define __strtofpmax __wcstofpmax
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#define __strtofpmax __wcstofpmax
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#define __strtofpmax_l __wcstofpmax_l
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#define __strtofpmax_l __wcstofpmax_l
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#define Wchar wchar_t
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#define Wchar wchar_t
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#ifdef __UCLIBC_DO_XLOCALE
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#ifdef __UCLIBC_DO_XLOCALE
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#define ISSPACE(C) iswspace_l((C), locale_arg)
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#define ISSPACE(C) iswspace_l((C), locale_arg)
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#else
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#else
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#define ISSPACE(C) iswspace((C))
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#define ISSPACE(C) iswspace((C))
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#endif
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#endif
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#else /* defined(L___wcstofpmax) || defined(L___wcstofpmax) */
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#else /* defined(L___wcstofpmax) || defined(L___wcstofpmax) */
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#define Wchar char
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#define Wchar char
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#ifdef __UCLIBC_DO_XLOCALE
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#ifdef __UCLIBC_DO_XLOCALE
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#define ISSPACE(C) isspace_l((C), locale_arg)
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#define ISSPACE(C) isspace_l((C), locale_arg)
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#else
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#else
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#define ISSPACE(C) isspace((C))
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#define ISSPACE(C) isspace((C))
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#endif
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#endif
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#endif /* defined(L___wcstofpmax) || defined(L___wcstofpmax) */
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#endif /* defined(L___wcstofpmax) || defined(L___wcstofpmax) */
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#if defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE)
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#if defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE)
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__fpmax_t __strtofpmax(const Wchar *str, Wchar **endptr, int exponent_power)
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__fpmax_t __strtofpmax(const Wchar *str, Wchar **endptr, int exponent_power)
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{
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{
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return __strtofpmax_l(str, endptr, exponent_power, __UCLIBC_CURLOCALE);
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return __strtofpmax_l(str, endptr, exponent_power, __UCLIBC_CURLOCALE);
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}
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}
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#else /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
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#else /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
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__fpmax_t __XL_NPP(__strtofpmax)(const Wchar *str, Wchar **endptr, int exponent_power
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__fpmax_t __XL_NPP(__strtofpmax)(const Wchar *str, Wchar **endptr, int exponent_power
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__LOCALE_PARAM )
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__LOCALE_PARAM )
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{
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{
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__fpmax_t number;
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__fpmax_t number;
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__fpmax_t p_base = 10; /* Adjusted to 16 in the hex case. */
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__fpmax_t p_base = 10; /* Adjusted to 16 in the hex case. */
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Wchar *pos0;
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Wchar *pos0;
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#ifdef _STRTOD_ENDPTR
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#ifdef _STRTOD_ENDPTR
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Wchar *pos1;
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Wchar *pos1;
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#endif
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#endif
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Wchar *pos = (Wchar *) str;
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Wchar *pos = (Wchar *) str;
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int exponent_temp;
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int exponent_temp;
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int negative; /* A flag for the number, a multiplier for the exponent. */
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int negative; /* A flag for the number, a multiplier for the exponent. */
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#ifdef _STRTOD_NEED_NUM_DIGITS
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#ifdef _STRTOD_NEED_NUM_DIGITS
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int num_digits;
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int num_digits;
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#endif
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#endif
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#ifdef __UCLIBC_HAS_LOCALE__
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#ifdef __UCLIBC_HAS_LOCALE__
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const char *decpt = __LOCALE_PTR->decimal_point;
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const char *decpt = __LOCALE_PTR->decimal_point;
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#if defined(L___wcstofpmax) || defined(L___wcstofpmax)
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#if defined(L___wcstofpmax) || defined(L___wcstofpmax)
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wchar_t decpt_wc = __LOCALE_PTR->decimal_point;
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wchar_t decpt_wc = __LOCALE_PTR->decimal_point;
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#else
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#else
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int decpt_len = __LOCALE_PTR->decimal_point_len;
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int decpt_len = __LOCALE_PTR->decimal_point_len;
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#endif
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#endif
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#endif
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#endif
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#ifdef _STRTOD_HEXADECIMAL_FLOATS
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#ifdef _STRTOD_HEXADECIMAL_FLOATS
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Wchar expchar = 'e';
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Wchar expchar = 'e';
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Wchar *poshex = NULL;
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Wchar *poshex = NULL;
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__uint16_t is_mask = _ISdigit;
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__uint16_t is_mask = _ISdigit;
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#define EXPCHAR expchar
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#define EXPCHAR expchar
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#define IS_X_DIGIT(C) __isctype((C), is_mask)
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#define IS_X_DIGIT(C) __isctype((C), is_mask)
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#else /* _STRTOD_HEXADECIMAL_FLOATS */
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#else /* _STRTOD_HEXADECIMAL_FLOATS */
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#define EXPCHAR 'e'
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#define EXPCHAR 'e'
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#define IS_X_DIGIT(C) isdigit((C))
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#define IS_X_DIGIT(C) isdigit((C))
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#endif /* _STRTOD_HEXADECIMAL_FLOATS */
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#endif /* _STRTOD_HEXADECIMAL_FLOATS */
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while (ISSPACE(*pos)) { /* Skip leading whitespace. */
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while (ISSPACE(*pos)) { /* Skip leading whitespace. */
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++pos;
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++pos;
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}
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}
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negative = 0;
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negative = 0;
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switch(*pos) { /* Handle optional sign. */
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switch(*pos) { /* Handle optional sign. */
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case '-': negative = 1; /* Fall through to increment position. */
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case '-': negative = 1; /* Fall through to increment position. */
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case '+': ++pos;
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case '+': ++pos;
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}
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}
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#ifdef _STRTOD_HEXADECIMAL_FLOATS
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#ifdef _STRTOD_HEXADECIMAL_FLOATS
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if ((*pos == '0') && (((pos[1])|0x20) == 'x')) {
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if ((*pos == '0') && (((pos[1])|0x20) == 'x')) {
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poshex = ++pos; /* Save position of 'x' in case no digits */
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poshex = ++pos; /* Save position of 'x' in case no digits */
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++pos; /* and advance past it. */
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++pos; /* and advance past it. */
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is_mask = _ISxdigit; /* Used by IS_X_DIGIT. */
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is_mask = _ISxdigit; /* Used by IS_X_DIGIT. */
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expchar = 'p'; /* Adjust exponent char. */
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expchar = 'p'; /* Adjust exponent char. */
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p_base = 16; /* Adjust base multiplier. */
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p_base = 16; /* Adjust base multiplier. */
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}
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}
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#endif
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#endif
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number = 0.;
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number = 0.;
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#ifdef _STRTOD_NEED_NUM_DIGITS
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#ifdef _STRTOD_NEED_NUM_DIGITS
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num_digits = -1;
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num_digits = -1;
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#endif
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#endif
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/* exponent_power = 0; */
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/* exponent_power = 0; */
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pos0 = NULL;
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pos0 = NULL;
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LOOP:
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LOOP:
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while (IS_X_DIGIT(*pos)) { /* Process string of (hex) digits. */
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while (IS_X_DIGIT(*pos)) { /* Process string of (hex) digits. */
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#ifdef _STRTOD_RESTRICT_DIGITS
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#ifdef _STRTOD_RESTRICT_DIGITS
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if (num_digits < 0) { /* First time through? */
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if (num_digits < 0) { /* First time through? */
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++num_digits; /* We've now seen a digit. */
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++num_digits; /* We've now seen a digit. */
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}
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}
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if (num_digits || (*pos != '0')) { /* Had/have nonzero. */
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if (num_digits || (*pos != '0')) { /* Had/have nonzero. */
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++num_digits;
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++num_digits;
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if (num_digits <= DECIMAL_DIG) { /* Is digit significant? */
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if (num_digits <= DECIMAL_DIG) { /* Is digit significant? */
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#ifdef _STRTOD_HEXADECIMAL_FLOATS
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#ifdef _STRTOD_HEXADECIMAL_FLOATS
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number = number * p_base
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number = number * p_base
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+ (isdigit(*pos)
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+ (isdigit(*pos)
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? (*pos - '0')
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? (*pos - '0')
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: (((*pos)|0x20) - ('a' - 10)));
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: (((*pos)|0x20) - ('a' - 10)));
|
#else /* _STRTOD_HEXADECIMAL_FLOATS */
|
#else /* _STRTOD_HEXADECIMAL_FLOATS */
|
number = number * p_base + (*pos - '0');
|
number = number * p_base + (*pos - '0');
|
#endif /* _STRTOD_HEXADECIMAL_FLOATS */
|
#endif /* _STRTOD_HEXADECIMAL_FLOATS */
|
}
|
}
|
}
|
}
|
#else /* _STRTOD_RESTRICT_DIGITS */
|
#else /* _STRTOD_RESTRICT_DIGITS */
|
#ifdef _STRTOD_NEED_NUM_DIGITS
|
#ifdef _STRTOD_NEED_NUM_DIGITS
|
++num_digits;
|
++num_digits;
|
#endif
|
#endif
|
#ifdef _STRTOD_HEXADECIMAL_FLOATS
|
#ifdef _STRTOD_HEXADECIMAL_FLOATS
|
number = number * p_base
|
number = number * p_base
|
+ (isdigit(*pos)
|
+ (isdigit(*pos)
|
? (*pos - '0')
|
? (*pos - '0')
|
: (((*pos)|0x20) - ('a' - 10)));
|
: (((*pos)|0x20) - ('a' - 10)));
|
#else /* _STRTOD_HEXADECIMAL_FLOATS */
|
#else /* _STRTOD_HEXADECIMAL_FLOATS */
|
number = number * p_base + (*pos - '0');
|
number = number * p_base + (*pos - '0');
|
#endif /* _STRTOD_HEXADECIMAL_FLOATS */
|
#endif /* _STRTOD_HEXADECIMAL_FLOATS */
|
#endif /* _STRTOD_RESTRICT_DIGITS */
|
#endif /* _STRTOD_RESTRICT_DIGITS */
|
++pos;
|
++pos;
|
}
|
}
|
|
|
#ifdef __UCLIBC_HAS_LOCALE__
|
#ifdef __UCLIBC_HAS_LOCALE__
|
#if defined(L___wcstofpmax) || defined(L___wcstofpmax)
|
#if defined(L___wcstofpmax) || defined(L___wcstofpmax)
|
if (!pos0 && (*pos == decpt_wc)) { /* First decimal point? */
|
if (!pos0 && (*pos == decpt_wc)) { /* First decimal point? */
|
pos0 = ++pos;
|
pos0 = ++pos;
|
goto LOOP;
|
goto LOOP;
|
}
|
}
|
#else
|
#else
|
if (!pos0 && !memcmp(pos, decpt, decpt_len)) { /* First decimal point? */
|
if (!pos0 && !memcmp(pos, decpt, decpt_len)) { /* First decimal point? */
|
pos0 = (pos += decpt_len);
|
pos0 = (pos += decpt_len);
|
goto LOOP;
|
goto LOOP;
|
}
|
}
|
#endif
|
#endif
|
#else /* __UCLIBC_HAS_LOCALE__ */
|
#else /* __UCLIBC_HAS_LOCALE__ */
|
if ((*pos == '.') && !pos0) { /* First decimal point? */
|
if ((*pos == '.') && !pos0) { /* First decimal point? */
|
pos0 = ++pos; /* Save position of decimal point */
|
pos0 = ++pos; /* Save position of decimal point */
|
goto LOOP; /* and process rest of digits. */
|
goto LOOP; /* and process rest of digits. */
|
}
|
}
|
#endif /* __UCLIBC_HAS_LOCALE__ */
|
#endif /* __UCLIBC_HAS_LOCALE__ */
|
|
|
#ifdef _STRTOD_NEED_NUM_DIGITS
|
#ifdef _STRTOD_NEED_NUM_DIGITS
|
if (num_digits<0) { /* Must have at least one digit. */
|
if (num_digits<0) { /* Must have at least one digit. */
|
#ifdef _STRTOD_HEXADECIMAL_FLOATS
|
#ifdef _STRTOD_HEXADECIMAL_FLOATS
|
if (poshex) { /* Back up to '0' in '0x' prefix. */
|
if (poshex) { /* Back up to '0' in '0x' prefix. */
|
pos = poshex;
|
pos = poshex;
|
goto DONE;
|
goto DONE;
|
}
|
}
|
#endif /* _STRTOD_HEXADECIMAL_FLOATS */
|
#endif /* _STRTOD_HEXADECIMAL_FLOATS */
|
|
|
#ifdef _STRTOD_NAN_INF_STRINGS
|
#ifdef _STRTOD_NAN_INF_STRINGS
|
if (!pos0) { /* No decimal point, so check for inf/nan. */
|
if (!pos0) { /* No decimal point, so check for inf/nan. */
|
/* Note: nan is the first string so 'number = i/0.;' works. */
|
/* Note: nan is the first string so 'number = i/0.;' works. */
|
static const char nan_inf_str[] = "\05nan\0\012infinity\0\05inf\0";
|
static const char nan_inf_str[] = "\05nan\0\012infinity\0\05inf\0";
|
int i = 0;
|
int i = 0;
|
|
|
#ifdef __UCLIBC_HAS_LOCALE__
|
#ifdef __UCLIBC_HAS_LOCALE__
|
/* Avoid tolower problems for INFINITY in the tr_TR locale. (yuk)*/
|
/* Avoid tolower problems for INFINITY in the tr_TR locale. (yuk)*/
|
#undef _tolower
|
#undef _tolower
|
#define _tolower(C) ((C)|0x20)
|
#define _tolower(C) ((C)|0x20)
|
#endif /* __UCLIBC_HAS_LOCALE__ */
|
#endif /* __UCLIBC_HAS_LOCALE__ */
|
|
|
do {
|
do {
|
/* Unfortunately, we have no memcasecmp(). */
|
/* Unfortunately, we have no memcasecmp(). */
|
int j = 0;
|
int j = 0;
|
while (_tolower(pos[j]) == nan_inf_str[i+1+j]) {
|
while (_tolower(pos[j]) == nan_inf_str[i+1+j]) {
|
++j;
|
++j;
|
if (!nan_inf_str[i+1+j]) {
|
if (!nan_inf_str[i+1+j]) {
|
number = i / 0.;
|
number = i / 0.;
|
if (negative) { /* Correct for sign. */
|
if (negative) { /* Correct for sign. */
|
number = -number;
|
number = -number;
|
}
|
}
|
pos += nan_inf_str[i] - 2;
|
pos += nan_inf_str[i] - 2;
|
goto DONE;
|
goto DONE;
|
}
|
}
|
}
|
}
|
i += nan_inf_str[i];
|
i += nan_inf_str[i];
|
} while (nan_inf_str[i]);
|
} while (nan_inf_str[i]);
|
}
|
}
|
|
|
#endif /* STRTOD_NAN_INF_STRINGS */
|
#endif /* STRTOD_NAN_INF_STRINGS */
|
#ifdef _STRTOD_ENDPTR
|
#ifdef _STRTOD_ENDPTR
|
pos = (Wchar *) str;
|
pos = (Wchar *) str;
|
#endif
|
#endif
|
goto DONE;
|
goto DONE;
|
}
|
}
|
#endif /* _STRTOD_NEED_NUM_DIGITS */
|
#endif /* _STRTOD_NEED_NUM_DIGITS */
|
|
|
#ifdef _STRTOD_RESTRICT_DIGITS
|
#ifdef _STRTOD_RESTRICT_DIGITS
|
if (num_digits > DECIMAL_DIG) { /* Adjust exponent for skipped digits. */
|
if (num_digits > DECIMAL_DIG) { /* Adjust exponent for skipped digits. */
|
exponent_power += num_digits - DECIMAL_DIG;
|
exponent_power += num_digits - DECIMAL_DIG;
|
}
|
}
|
#endif
|
#endif
|
|
|
if (pos0) {
|
if (pos0) {
|
exponent_power += pos0 - pos; /* Adjust exponent for decimal point. */
|
exponent_power += pos0 - pos; /* Adjust exponent for decimal point. */
|
}
|
}
|
|
|
#ifdef _STRTOD_HEXADECIMAL_FLOATS
|
#ifdef _STRTOD_HEXADECIMAL_FLOATS
|
if (poshex) {
|
if (poshex) {
|
exponent_power *= 4; /* Above is 2**4, but below is 2. */
|
exponent_power *= 4; /* Above is 2**4, but below is 2. */
|
p_base = 2;
|
p_base = 2;
|
}
|
}
|
#endif /* _STRTOD_HEXADECIMAL_FLOATS */
|
#endif /* _STRTOD_HEXADECIMAL_FLOATS */
|
|
|
if (negative) { /* Correct for sign. */
|
if (negative) { /* Correct for sign. */
|
number = -number;
|
number = -number;
|
}
|
}
|
|
|
/* process an exponent string */
|
/* process an exponent string */
|
if (((*pos)|0x20) == EXPCHAR) {
|
if (((*pos)|0x20) == EXPCHAR) {
|
#ifdef _STRTOD_ENDPTR
|
#ifdef _STRTOD_ENDPTR
|
pos1 = pos;
|
pos1 = pos;
|
#endif
|
#endif
|
negative = 1;
|
negative = 1;
|
switch(*++pos) { /* Handle optional sign. */
|
switch(*++pos) { /* Handle optional sign. */
|
case '-': negative = -1; /* Fall through to increment pos. */
|
case '-': negative = -1; /* Fall through to increment pos. */
|
case '+': ++pos;
|
case '+': ++pos;
|
}
|
}
|
|
|
pos0 = pos;
|
pos0 = pos;
|
exponent_temp = 0;
|
exponent_temp = 0;
|
while (isdigit(*pos)) { /* Process string of digits. */
|
while (isdigit(*pos)) { /* Process string of digits. */
|
#ifdef _STRTOD_RESTRICT_EXP
|
#ifdef _STRTOD_RESTRICT_EXP
|
if (exponent_temp < MAX_ALLOWED_EXP) { /* Avoid overflow. */
|
if (exponent_temp < MAX_ALLOWED_EXP) { /* Avoid overflow. */
|
exponent_temp = exponent_temp * 10 + (*pos - '0');
|
exponent_temp = exponent_temp * 10 + (*pos - '0');
|
}
|
}
|
#else
|
#else
|
exponent_temp = exponent_temp * 10 + (*pos - '0');
|
exponent_temp = exponent_temp * 10 + (*pos - '0');
|
#endif
|
#endif
|
++pos;
|
++pos;
|
}
|
}
|
|
|
#ifdef _STRTOD_ENDPTR
|
#ifdef _STRTOD_ENDPTR
|
if (pos == pos0) { /* No digits? */
|
if (pos == pos0) { /* No digits? */
|
pos = pos1; /* Back up to {e|E}/{p|P}. */
|
pos = pos1; /* Back up to {e|E}/{p|P}. */
|
} /* else */
|
} /* else */
|
#endif
|
#endif
|
|
|
exponent_power += negative * exponent_temp;
|
exponent_power += negative * exponent_temp;
|
}
|
}
|
|
|
#ifdef _STRTOD_ZERO_CHECK
|
#ifdef _STRTOD_ZERO_CHECK
|
if (number == 0.) {
|
if (number == 0.) {
|
goto DONE;
|
goto DONE;
|
}
|
}
|
#endif
|
#endif
|
|
|
/* scale the result */
|
/* scale the result */
|
#ifdef _STRTOD_LOG_SCALING
|
#ifdef _STRTOD_LOG_SCALING
|
exponent_temp = exponent_power;
|
exponent_temp = exponent_power;
|
|
|
if (exponent_temp < 0) {
|
if (exponent_temp < 0) {
|
exponent_temp = -exponent_temp;
|
exponent_temp = -exponent_temp;
|
}
|
}
|
|
|
while (exponent_temp) {
|
while (exponent_temp) {
|
if (exponent_temp & 1) {
|
if (exponent_temp & 1) {
|
if (exponent_power < 0) {
|
if (exponent_power < 0) {
|
/* Warning... caluclating a factor for the exponent and
|
/* Warning... caluclating a factor for the exponent and
|
* then dividing could easily be faster. But doing so
|
* then dividing could easily be faster. But doing so
|
* might cause problems when dealing with denormals. */
|
* might cause problems when dealing with denormals. */
|
number /= p_base;
|
number /= p_base;
|
} else {
|
} else {
|
number *= p_base;
|
number *= p_base;
|
}
|
}
|
}
|
}
|
exponent_temp >>= 1;
|
exponent_temp >>= 1;
|
p_base *= p_base;
|
p_base *= p_base;
|
}
|
}
|
|
|
#else /* _STRTOD_LOG_SCALING */
|
#else /* _STRTOD_LOG_SCALING */
|
while (exponent_power) {
|
while (exponent_power) {
|
if (exponent_power < 0) {
|
if (exponent_power < 0) {
|
number /= p_base;
|
number /= p_base;
|
exponent_power++;
|
exponent_power++;
|
} else {
|
} else {
|
number *= p_base;
|
number *= p_base;
|
exponent_power--;
|
exponent_power--;
|
}
|
}
|
}
|
}
|
#endif /* _STRTOD_LOG_SCALING */
|
#endif /* _STRTOD_LOG_SCALING */
|
|
|
#ifdef _STRTOD_ERRNO
|
#ifdef _STRTOD_ERRNO
|
if (__FPMAX_ZERO_OR_INF_CHECK(number)) {
|
if (__FPMAX_ZERO_OR_INF_CHECK(number)) {
|
__set_errno(ERANGE);
|
__set_errno(ERANGE);
|
}
|
}
|
#endif
|
#endif
|
|
|
DONE:
|
DONE:
|
#ifdef _STRTOD_ENDPTR
|
#ifdef _STRTOD_ENDPTR
|
if (endptr) {
|
if (endptr) {
|
*endptr = pos;
|
*endptr = pos;
|
}
|
}
|
#endif
|
#endif
|
|
|
return number;
|
return number;
|
}
|
}
|
|
|
#endif /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
|
#endif /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
|
|
|
#endif
|
#endif
|
/**********************************************************************/
|
/**********************************************************************/
|
#ifdef L___fp_range_check
|
#ifdef L___fp_range_check
|
#if defined(NEED_STRTOF_WRAPPER) || defined(NEED_STRTOD_WRAPPER)
|
#if defined(NEED_STRTOF_WRAPPER) || defined(NEED_STRTOD_WRAPPER)
|
|
|
extern void __fp_range_check(__fpmax_t y, __fpmax_t x)
|
extern void __fp_range_check(__fpmax_t y, __fpmax_t x)
|
{
|
{
|
if (__FPMAX_ZERO_OR_INF_CHECK(y) /* y is 0 or +/- infinity */
|
if (__FPMAX_ZERO_OR_INF_CHECK(y) /* y is 0 or +/- infinity */
|
&& (y != 0) /* y is not 0 (could have x>0, y==0 if underflow) */
|
&& (y != 0) /* y is not 0 (could have x>0, y==0 if underflow) */
|
&& !__FPMAX_ZERO_OR_INF_CHECK(x) /* x is not 0 or +/- infinity */
|
&& !__FPMAX_ZERO_OR_INF_CHECK(x) /* x is not 0 or +/- infinity */
|
) {
|
) {
|
__set_errno(ERANGE); /* Then x is not in y's range. */
|
__set_errno(ERANGE); /* Then x is not in y's range. */
|
}
|
}
|
}
|
}
|
|
|
#endif
|
#endif
|
#endif
|
#endif
|
/**********************************************************************/
|
/**********************************************************************/
|
#if defined(L_strtof) || defined(L_strtof_l) || defined(L_wcstof) || defined(L_wcstof_l)
|
#if defined(L_strtof) || defined(L_strtof_l) || defined(L_wcstof) || defined(L_wcstof_l)
|
#if defined(NEED_STRTOF_WRAPPER)
|
#if defined(NEED_STRTOF_WRAPPER)
|
|
|
#if defined(L_wcstof) || defined(L_wcstof_l)
|
#if defined(L_wcstof) || defined(L_wcstof_l)
|
#define strtof wcstof
|
#define strtof wcstof
|
#define strtof_l wcstof_l
|
#define strtof_l wcstof_l
|
#define __strtof __wcstof
|
#define __strtof __wcstof
|
#define __strtof_l __wcstof_l
|
#define __strtof_l __wcstof_l
|
#define __strtofpmax __wcstofpmax
|
#define __strtofpmax __wcstofpmax
|
#define __strtofpmax_l __wcstofpmax_l
|
#define __strtofpmax_l __wcstofpmax_l
|
#define Wchar wchar_t
|
#define Wchar wchar_t
|
#else
|
#else
|
#define Wchar char
|
#define Wchar char
|
#endif
|
#endif
|
|
|
|
|
float __XL(strtof)(const Wchar *str, Wchar **endptr __LOCALE_PARAM )
|
float __XL(strtof)(const Wchar *str, Wchar **endptr __LOCALE_PARAM )
|
{
|
{
|
#if FPMAX_TYPE == 1
|
#if FPMAX_TYPE == 1
|
return __XL_NPP(__strtofpmax)(str, endptr, 0 __LOCALE_ARG );
|
return __XL_NPP(__strtofpmax)(str, endptr, 0 __LOCALE_ARG );
|
#else
|
#else
|
__fpmax_t x;
|
__fpmax_t x;
|
float y;
|
float y;
|
|
|
x = __XL_NPP(__strtofpmax)(str, endptr, 0 __LOCALE_ARG );
|
x = __XL_NPP(__strtofpmax)(str, endptr, 0 __LOCALE_ARG );
|
y = (float) x;
|
y = (float) x;
|
|
|
__fp_range_check(y, x);
|
__fp_range_check(y, x);
|
|
|
return y;
|
return y;
|
#endif
|
#endif
|
}
|
}
|
|
|
__XL_ALIAS(strtof)
|
__XL_ALIAS(strtof)
|
|
|
#endif
|
#endif
|
#endif
|
#endif
|
/**********************************************************************/
|
/**********************************************************************/
|
#if defined(L_strtod) || defined(L_strtod_l) || defined(L_wcstod) || defined(L_wcstod_l)
|
#if defined(L_strtod) || defined(L_strtod_l) || defined(L_wcstod) || defined(L_wcstod_l)
|
#if defined(NEED_STRTOD_WRAPPER)
|
#if defined(NEED_STRTOD_WRAPPER)
|
|
|
#if defined(L_wcstod) || defined(L_wcstod_l)
|
#if defined(L_wcstod) || defined(L_wcstod_l)
|
#define strtod wcstod
|
#define strtod wcstod
|
#define strtod_l wcstod_l
|
#define strtod_l wcstod_l
|
#define __strtod __wcstod
|
#define __strtod __wcstod
|
#define __strtod_l __wcstod_l
|
#define __strtod_l __wcstod_l
|
#define __strtofpmax __wcstofpmax
|
#define __strtofpmax __wcstofpmax
|
#define __strtofpmax_l __wcstofpmax_l
|
#define __strtofpmax_l __wcstofpmax_l
|
#define Wchar wchar_t
|
#define Wchar wchar_t
|
#else
|
#else
|
#define Wchar char
|
#define Wchar char
|
#endif
|
#endif
|
|
|
double __XL(strtod)(const Wchar *__restrict str,
|
double __XL(strtod)(const Wchar *__restrict str,
|
Wchar **__restrict endptr __LOCALE_PARAM )
|
Wchar **__restrict endptr __LOCALE_PARAM )
|
{
|
{
|
#if FPMAX_TYPE == 2
|
#if FPMAX_TYPE == 2
|
return __XL_NPP(__strtofpmax)(str, endptr, 0 __LOCALE_ARG );
|
return __XL_NPP(__strtofpmax)(str, endptr, 0 __LOCALE_ARG );
|
#else
|
#else
|
__fpmax_t x;
|
__fpmax_t x;
|
double y;
|
double y;
|
|
|
x = __XL_NPP(__strtofpmax)(str, endptr, 0 __LOCALE_ARG );
|
x = __XL_NPP(__strtofpmax)(str, endptr, 0 __LOCALE_ARG );
|
y = (double) x;
|
y = (double) x;
|
|
|
__fp_range_check(y, x);
|
__fp_range_check(y, x);
|
|
|
return y;
|
return y;
|
#endif
|
#endif
|
}
|
}
|
|
|
__XL_ALIAS(strtod)
|
__XL_ALIAS(strtod)
|
|
|
#endif
|
#endif
|
#endif
|
#endif
|
/**********************************************************************/
|
/**********************************************************************/
|
#if defined(L_strtold) || defined(L_strtold_l) || defined(L_wcstold) || defined(L_wcstold_l)
|
#if defined(L_strtold) || defined(L_strtold_l) || defined(L_wcstold) || defined(L_wcstold_l)
|
#if defined(NEED_STRTOLD_WRAPPER)
|
#if defined(NEED_STRTOLD_WRAPPER)
|
|
|
#if defined(L_wcstold) || defined(L_wcstold_l)
|
#if defined(L_wcstold) || defined(L_wcstold_l)
|
#define strtold wcstold
|
#define strtold wcstold
|
#define strtold_l wcstold_l
|
#define strtold_l wcstold_l
|
#define __strtold __wcstold
|
#define __strtold __wcstold
|
#define __strtold_l __wcstold_l
|
#define __strtold_l __wcstold_l
|
#define __strtofpmax __wcstofpmax
|
#define __strtofpmax __wcstofpmax
|
#define __strtofpmax_l __wcstofpmax_l
|
#define __strtofpmax_l __wcstofpmax_l
|
#define Wchar wchar_t
|
#define Wchar wchar_t
|
#else
|
#else
|
#define Wchar char
|
#define Wchar char
|
#endif
|
#endif
|
|
|
long double __XL(strtold)(const Wchar *str, Wchar **endptr __LOCALE_PARAM )
|
long double __XL(strtold)(const Wchar *str, Wchar **endptr __LOCALE_PARAM )
|
{
|
{
|
#if FPMAX_TYPE == 3
|
#if FPMAX_TYPE == 3
|
return __XL_NPP(__strtofpmax)(str, endptr, 0 __LOCALE_ARG );
|
return __XL_NPP(__strtofpmax)(str, endptr, 0 __LOCALE_ARG );
|
#else
|
#else
|
__fpmax_t x;
|
__fpmax_t x;
|
long double y;
|
long double y;
|
|
|
x = __XL_NPP(__strtofpmax)(str, endptr, 0 __LOCALE_ARG );
|
x = __XL_NPP(__strtofpmax)(str, endptr, 0 __LOCALE_ARG );
|
y = (long double) x;
|
y = (long double) x;
|
|
|
__fp_range_check(y, x);
|
__fp_range_check(y, x);
|
|
|
return y;
|
return y;
|
#endif
|
#endif
|
}
|
}
|
|
|
__XL_ALIAS(strtold)
|
__XL_ALIAS(strtold)
|
|
|
#endif
|
#endif
|
#endif
|
#endif
|
/**********************************************************************/
|
/**********************************************************************/
|
|
|
