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/* FUNCTION <<vprintf>>, <<vfprintf>>, <<vsprintf>>---format argument list INDEX vprintf INDEX vfprintf INDEX vsprintf INDEX vsnprintf ANSI_SYNOPSIS #include <stdio.h> #include <stdarg.h> int vprintf(const char *<[fmt]>, va_list <[list]>); int vfprintf(FILE *<[fp]>, const char *<[fmt]>, va_list <[list]>); int vsprintf(char *<[str]>, const char *<[fmt]>, va_list <[list]>); int vsnprintf(char *<[str]>, size_t <[size]>, const char *<[fmt]>, va_list <[list]>); int _vprintf_r(void *<[reent]>, const char *<[fmt]>, va_list <[list]>); int _vfprintf_r(void *<[reent]>, FILE *<[fp]>, const char *<[fmt]>, va_list <[list]>); int _vsprintf_r(void *<[reent]>, char *<[str]>, const char *<[fmt]>, va_list <[list]>); int _vsnprintf_r(void *<[reent]>, char *<[str]>, size_t <[size]>, const char *<[fmt]>, va_list <[list]>); TRAD_SYNOPSIS #include <stdio.h> #include <varargs.h> int vprintf( <[fmt]>, <[list]>) char *<[fmt]>; va_list <[list]>; int vfprintf(<[fp]>, <[fmt]>, <[list]>) FILE *<[fp]>; char *<[fmt]>; va_list <[list]>; int vsprintf(<[str]>, <[fmt]>, <[list]>) char *<[str]>; char *<[fmt]>; va_list <[list]>; int vsnprintf(<[str]>, <[size]>, <[fmt]>, <[list]>) char *<[str]>; size_t <[size]>; char *<[fmt]>; va_list <[list]>; int _vprintf_r(<[reent]>, <[fmt]>, <[list]>) char *<[reent]>; char *<[fmt]>; va_list <[list]>; int _vfprintf_r(<[reent]>, <[fp]>, <[fmt]>, <[list]>) char *<[reent]>; FILE *<[fp]>; char *<[fmt]>; va_list <[list]>; int _vsprintf_r(<[reent]>, <[str]>, <[fmt]>, <[list]>) char *<[reent]>; char *<[str]>; char *<[fmt]>; va_list <[list]>; int _vsnprintf_r(<[reent]>, <[str]>, <[size]>, <[fmt]>, <[list]>) char *<[reent]>; char *<[str]>; size_t <[size]>; char *<[fmt]>; va_list <[list]>; DESCRIPTION <<vprintf>>, <<vfprintf>>, <<vsprintf>> and <<vsnprintf>> are (respectively) variants of <<printf>>, <<fprintf>>, <<sprintf>> and <<snprintf>>. They differ only in allowing their caller to pass the variable argument list as a <<va_list>> object (initialized by <<va_start>>) rather than directly accepting a variable number of arguments. RETURNS The return values are consistent with the corresponding functions: <<vsprintf>> returns the number of bytes in the output string, save that the concluding <<NULL>> is not counted. <<vprintf>> and <<vfprintf>> return the number of characters transmitted. If an error occurs, <<vprintf>> and <<vfprintf>> return <<EOF>>. No error returns occur for <<vsprintf>>. PORTABILITY ANSI C requires all three functions. Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, <<lseek>>, <<read>>, <<sbrk>>, <<write>>. */ /*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Chris Torek. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #if defined(LIBC_SCCS) && !defined(lint) /*static char *sccsid = "from: @(#)vfprintf.c 5.50 (Berkeley) 12/16/92";*/ static char *rcsid = "$Id: vfprintf.c 148 2010-06-30 19:21:22Z jeremybennett $"; #endif /* LIBC_SCCS and not lint */ /* * Actual printf innards. * * This code is large and complicated... */ #ifdef INTEGER_ONLY #define VFPRINTF vfiprintf #define _VFPRINTF_R _vfiprintf_r #else #define VFPRINTF vfprintf #define _VFPRINTF_R _vfprintf_r #ifndef NO_FLOATING_POINT #define FLOATING_POINT #endif #endif #include <_ansi.h> #include <limits.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <reent.h> #include <wchar.h> #include <string.h> #ifdef __ALTIVEC__ #include <altivec.h> #endif #ifdef _HAVE_STDC #include <stdarg.h> #else #include <varargs.h> #endif #include "local.h" #include "fvwrite.h" #include "vfieeefp.h" /* Currently a test is made to see if long double processing is warranted. This could be changed in the future should the _ldtoa_r code be preferred over _dtoa_r. */ #define _NO_LONGDBL #if defined _WANT_IO_LONG_DOUBLE && (LDBL_MANT_DIG > DBL_MANT_DIG) #undef _NO_LONGDBL #endif #define _NO_LONGLONG #if defined _WANT_IO_LONG_LONG && defined __GNUC__ # undef _NO_LONGLONG #endif #ifdef __ALTIVEC__ typedef union { vector int v; float f[4]; int i[16 / sizeof(int)]; long l[4]; short s[8]; signed char c[16]; } vec_16_byte_union; #endif /* __ALTIVEC__ */ /* * Flush out all the vectors defined by the given uio, * then reset it so that it can be reused. */ static int __sprint_r(rptr, fp, uio) struct _reent *rptr; FILE *fp; register struct __suio *uio; { register int err; if (uio->uio_resid == 0) { uio->uio_iovcnt = 0; return (0); } err = __sfvwrite_r(rptr, fp, uio); uio->uio_resid = 0; uio->uio_iovcnt = 0; return (err); } /* * Helper function for `fprintf to unbuffered unix file': creates a * temporary buffer. We only work on write-only files; this avoids * worries about ungetc buffers and so forth. */ static int __sbprintf_r(rptr, fp, fmt, ap) struct _reent *rptr; register FILE *fp; const char *fmt; va_list ap; { int ret; FILE fake; unsigned char buf[BUFSIZ]; /* copy the important variables */ fake._flags = fp->_flags & ~__SNBF; fake._file = fp->_file; fake._cookie = fp->_cookie; fake._write = fp->_write; /* set up the buffer */ fake._bf._base = fake._p = buf; fake._bf._size = fake._w = sizeof(buf); fake._lbfsize = 0; /* not actually used, but Just In Case */ /* do the work, then copy any error status */ ret = _VFPRINTF_R(rptr, &fake, fmt, ap); if (ret >= 0 && _fflush_r(rptr, &fake)) ret = EOF; if (fake._flags & __SERR) fp->_flags |= __SERR; return (ret); } #ifdef FLOATING_POINT #include <locale.h> #include <math.h> #include "floatio.h" #define BUF (MAXEXP+MAXFRACT+1) /* + decimal point */ #define DEFPREC 6 #ifdef _NO_LONGDBL static char *cvt _PARAMS((struct _reent *, double, int, int, char *, int *, int, int *)); #else static char *cvt _PARAMS((struct _reent *, _LONG_DOUBLE, int, int, char *, int *, int, int *)); extern int _ldcheck _PARAMS((_LONG_DOUBLE *)); #endif static int exponent _PARAMS((char *, int, int)); #ifdef __SPE__ static char *cvt_ufix64 _PARAMS((struct _reent *, unsigned long long, int, int *, int *)); #endif /* __SPE__ */ #else /* no FLOATING_POINT */ #define BUF 40 #endif /* FLOATING_POINT */ /* * Macros for converting digits to letters and vice versa */ #define to_digit(c) ((c) - '0') #define is_digit(c) ((unsigned)to_digit(c) <= 9) #define to_char(n) ((n) + '0') /* * Flags used during conversion. */ #define ALT 0x001 /* alternate form */ #define HEXPREFIX 0x002 /* add 0x or 0X prefix */ #define LADJUST 0x004 /* left adjustment */ #define LONGDBL 0x008 /* long double */ #define LONGINT 0x010 /* long integer */ #ifndef _NO_LONGLONG #define QUADINT 0x020 /* quad integer */ #else /* ifdef _NO_LONGLONG, make QUADINT equivalent to LONGINT, so that %lld behaves the same as %ld, not as %d, as expected if: sizeof (long long) = sizeof long > sizeof int */ #define QUADINT LONGINT #endif #define SHORTINT 0x040 /* short integer */ #define ZEROPAD 0x080 /* zero (as opposed to blank) pad */ #define FPT 0x100 /* Floating point number */ #define VECTOR 0x200 /* vector */ #define FIXEDPOINT 0x400 /* fixed-point */ int _DEFUN (VFPRINTF, (fp, fmt0, ap), FILE * fp _AND _CONST char *fmt0 _AND va_list ap) { CHECK_INIT (_REENT, fp); return _VFPRINTF_R (_REENT, fp, fmt0, ap); } int _DEFUN (_VFPRINTF_R, (data, fp, fmt0, ap), struct _reent *data _AND FILE * fp _AND _CONST char *fmt0 _AND va_list ap) { register char *fmt; /* format string */ register int ch; /* character from fmt */ register int n, m; /* handy integers (short term usage) */ register char *cp; /* handy char pointer (short term usage) */ register struct __siov *iovp;/* for PRINT macro */ register int flags; /* flags as above */ int ret; /* return value accumulator */ int width; /* width from format (%8d), or 0 */ int prec; /* precision from format (%.3d), or -1 */ char sign; /* sign prefix (' ', '+', '-', or \0) */ char old_sign; /* saved value of sign when looping for vectors */ int old_ch; /* saved value of ch when looping for vectors */ char *format_anchor; /* start of format to process */ wchar_t wc; #ifdef FLOATING_POINT char *decimal_point = localeconv()->decimal_point; char softsign; /* temporary negative sign for floats */ #ifdef _NO_LONGDBL union { int i; double d; } _double_ = {0}; #define _fpvalue (_double_.d) #else union { int i; _LONG_DOUBLE ld; } _long_double_ = {0}; #define _fpvalue (_long_double_.ld) int tmp; #endif int expt; /* integer value of exponent */ int expsize = 0; /* character count for expstr */ int ndig; /* actual number of digits returned by cvt */ char expstr[7]; /* buffer for exponent string */ #endif #ifndef _NO_LONGLONG #define quad_t long long #define u_quad_t unsigned long long #else #define quad_t long #define u_quad_t u_long #endif u_quad_t _uquad; /* integer arguments %[diouxX] */ enum { OCT, DEC, HEX } base;/* base for [diouxX] conversion */ int dprec; /* a copy of prec if [diouxX], 0 otherwise */ int realsz; /* field size expanded by dprec */ int size; /* size of converted field or string */ char *xdigs = NULL; /* digits for [xX] conversion */ #define NIOV 8 struct __suio uio; /* output information: summary */ struct __siov iov[NIOV];/* ... and individual io vectors */ char buf[BUF]; /* space for %c, %[diouxX], %[eEfgG] */ char ox[2]; /* space for 0x hex-prefix */ #ifdef __ALTIVEC__ char vec_sep; /* vector separator char */ int vec_print_count; /* number of vector chunks remaining */ vec_16_byte_union vec_tmp; #endif /* __ALTIVEC__ */ mbstate_t state; /* mbtowc calls from library must not change state */ /* * Choose PADSIZE to trade efficiency vs. size. If larger printf * fields occur frequently, increase PADSIZE and make the initialisers * below longer. */ #define PADSIZE 16 /* pad chunk size */ static _CONST char blanks[PADSIZE] = {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; static _CONST char zeroes[PADSIZE] = {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; /* * BEWARE, these `goto error' on error, and PAD uses `n'. */ #define PRINT(ptr, len) { \ iovp->iov_base = (ptr); \ iovp->iov_len = (len); \ uio.uio_resid += (len); \ iovp++; \ if (++uio.uio_iovcnt >= NIOV) { \ if (__sprint_r(data, fp, &uio)) \ goto error; \ iovp = iov; \ } \ } #define PAD(howmany, with) { \ if ((n = (howmany)) > 0) { \ while (n > PADSIZE) { \ PRINT(with, PADSIZE); \ n -= PADSIZE; \ } \ PRINT(with, n); \ } \ } #define FLUSH() { \ if (uio.uio_resid && __sprint_r(data, fp, &uio)) \ goto error; \ uio.uio_iovcnt = 0; \ iovp = iov; \ } #ifdef __ALTIVEC__ #define GET_SHORT(ap) \ (flags&VECTOR ? \ (vec_print_count < 8 ? (short)vec_tmp.s[8 - vec_print_count] : \ (vec_tmp.v = va_arg(ap, vector int), (short)vec_tmp.s[0])) : \ (short)va_arg(ap, int)) #define GET_USHORT(ap) \ (flags&VECTOR ? \ (vec_print_count < 8 ? (u_short)vec_tmp.s[8 - vec_print_count] : \ (vec_tmp.v = va_arg(ap, vector int), (u_short)vec_tmp.s[0])) : \ (u_short)va_arg(ap, int)) #define GET_LONG(ap) \ (flags&VECTOR ? \ (vec_print_count < 4 ? (long)vec_tmp.l[4 - vec_print_count] : \ (vec_tmp.v = va_arg(ap, vector int), vec_tmp.l[0])) : \ va_arg(ap, long int)) #define GET_ULONG(ap) \ (flags&VECTOR ? \ (vec_print_count < 4 ? (u_long)vec_tmp.l[4 - vec_print_count] : \ (vec_tmp.v = va_arg(ap, vector int), (u_long)vec_tmp.l[0])) : \ (u_long)va_arg(ap, unsigned long int)) #define GET_INT(ap) \ (flags&VECTOR ? \ (vec_print_count < 16 ? \ vec_tmp.c[16 - vec_print_count] : \ (vec_tmp.v = va_arg(ap, vector int), (int)vec_tmp.c[0])) : \ va_arg(ap, int)) #define GET_UINT(ap) \ (flags&VECTOR ? \ (vec_print_count < 16 ? \ (u_int)((unsigned char)vec_tmp.c[16 - vec_print_count]) : \ (vec_tmp.v = va_arg(ap, vector int), (u_int)((unsigned char)vec_tmp.c[0]))) : \ (u_int)va_arg(ap, unsigned int)) #else /* !__ALTIVEC__ */ #define GET_SHORT(ap) ((short)va_arg(ap, int)) #define GET_USHORT(ap) ((u_short)va_arg(ap, int)) #define GET_LONG(ap) (va_arg(ap, long int)) #define GET_ULONG(ap) ((u_long)va_arg(ap, unsigned long int)) #define GET_INT(ap) ((int)va_arg(ap, int)) #define GET_UINT(ap) ((u_int)va_arg(ap, unsigned int)) #endif /* !__ALTIVEC__ */ #ifndef _NO_LONGLONG #define SARG() \ (flags&QUADINT ? va_arg(ap, quad_t) : \ flags&LONGINT ? GET_LONG(ap) : \ flags&SHORTINT ? (long)GET_SHORT(ap) : \ (long)GET_INT(ap)) #define UARG() \ (flags&QUADINT ? va_arg(ap, u_quad_t) : \ flags&LONGINT ? GET_ULONG(ap) : \ flags&SHORTINT ? (u_long)GET_USHORT(ap) : \ (u_long)GET_UINT(ap)) #ifdef __SPE__ #define SFPARG() \ (flags&LONGINT ? va_arg(ap, quad_t) : \ flags&SHORTINT ? (long)GET_SHORT(ap) : \ (long)va_arg(ap, int)) #define UFPARG() \ (flags&LONGINT ? va_arg(ap, u_quad_t) : \ flags&SHORTINT ? (u_long)GET_USHORT(ap) : \ (u_long)va_arg(ap, u_int)) #endif /* __SPE__ */ #else #define SARG() \ (flags&LONGINT ? GET_LONG(ap) : \ flags&SHORTINT ? (long)GET_SHORT(ap) : \ (long)GET_INT(ap)) #define UARG() \ (flags&LONGINT ? GET_ULONG(ap) : \ flags&SHORTINT ? (u_long)GET_USHORT(ap) : \ (u_long)GET_UINT(ap)) #ifdef __SPE__ #define SFPARG() \ (flags&LONGINT ? (va_arg(ap, long) << 32) : \ flags&SHORTINT ? (long)GET_SHORT(ap) : \ (long)va_arg(ap, int)) #define UFPARG() \ (flags&LONGINT ? (va_arg(ap, u_long) <<32) : \ flags&SHORTINT ? (u_long)GET_USHORT(ap) : \ (u_long)va_arg(ap, u_int)) #endif /* __SPE__ */ #endif memset (&state, '\0', sizeof (state)); /* sorry, fprintf(read_only_file, "") returns EOF, not 0 */ if (cantwrite (data, fp)) { _funlockfile (fp); return (EOF); } /* optimise fprintf(stderr) (and other unbuffered Unix files) */ if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && fp->_file >= 0) return (__sbprintf_r(data, fp, fmt0, ap)); fmt = (char *)fmt0; uio.uio_iov = iovp = iov; uio.uio_resid = 0; uio.uio_iovcnt = 0; ret = 0; /* * Scan the format for conversions (`%' character). */ for (;;) { cp = fmt; while ((n = _mbtowc_r(data, &wc, fmt, MB_CUR_MAX, &state)) > 0) { fmt += n; if (wc == '%') { fmt--; break; } } if ((m = fmt - cp) != 0) { PRINT(cp, m); ret += m; } if (n <= 0) goto done; fmt++; /* skip over '%' */ flags = 0; dprec = 0; width = 0; prec = -1; sign = '\0'; old_sign = '\0'; #ifdef __ALTIVEC__ vec_print_count = 0; vec_sep = ' '; #endif /* __ALTIVEC__ */ format_anchor = fmt; rflag: ch = *fmt++; old_ch = ch; reswitch: switch (ch) { case ' ': /* * ``If the space and + flags both appear, the space * flag will be ignored.'' * -- ANSI X3J11 */ if (!sign) sign = ' '; goto rflag; case '#': flags |= ALT; goto rflag; case '*': /* * ``A negative field width argument is taken as a * - flag followed by a positive field width.'' * -- ANSI X3J11 * They don't exclude field widths read from args. */ if ((width = va_arg(ap, int)) >= 0) goto rflag; width = -width; /* FALLTHROUGH */ case '-': flags |= LADJUST; goto rflag; case '+': sign = '+'; goto rflag; #ifdef __ALTIVEC__ case ',': case ';': case ':': case '_': if (vec_sep != ' ') { fmt = format_anchor; continue; } vec_sep = ch; goto rflag; #endif /* __ALTIVEC__ */ case '.': if ((ch = *fmt++) == '*') { n = va_arg(ap, int); prec = n < 0 ? -1 : n; goto rflag; } n = 0; while (is_digit(ch)) { n = 10 * n + to_digit(ch); ch = *fmt++; } prec = n < 0 ? -1 : n; goto reswitch; case '0': /* * ``Note that 0 is taken as a flag, not as the * beginning of a field width.'' * -- ANSI X3J11 */ flags |= ZEROPAD; goto rflag; case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': n = 0; do { n = 10 * n + to_digit(ch); ch = *fmt++; } while (is_digit(ch)); width = n; goto reswitch; #ifdef FLOATING_POINT case 'L': #ifdef __ALTIVEC__ if (flags & VECTOR) { fmt = format_anchor; continue; } #endif /* __ALTIVEC__ */ flags |= LONGDBL; goto rflag; #endif case 'h': if (flags & LONGINT) { fmt = format_anchor; continue; } flags |= SHORTINT; #ifdef __ALTIVEC__ if (flags & VECTOR) vec_print_count = 8; #endif goto rflag; case 'l': if (flags & SHORTINT) { fmt = format_anchor; continue; } if (*fmt == 'l') { fmt++; flags |= QUADINT; flags &= ~VECTOR; } else { flags |= LONGINT; #ifdef __ALTIVEC__ if (flags & VECTOR) vec_print_count = 4; #endif } goto rflag; #ifdef __ALTIVEC__ case 'v': if (flags & VECTOR) { fmt = format_anchor; continue; } flags |= VECTOR; vec_print_count = (flags & SHORTINT) ? 8 : ((flags & LONGINT) ? 4 : 16); goto rflag; #endif case 'q': #ifdef __ALTIVEC__ if (flags & VECTOR) { fmt = format_anchor; continue; } #endif /* __ALTIVEC__ */ flags |= QUADINT; goto rflag; case 'c': #ifdef __ALTIVEC__ if (flags & VECTOR) { int k; vec_16_byte_union tmp; if (flags & (SHORTINT | LONGINT)) { fmt = format_anchor; continue; } tmp.v = va_arg(ap, vector int); cp = buf; for (k = 0; k < 15; ++k) { *cp++ = tmp.c[k]; if (vec_sep != ' ') *cp++ = vec_sep; } *cp++ = tmp.c[15]; size = cp - buf; cp = buf; vec_print_count = 0; } else #endif /* __ALTIVEC__ */ { *(cp = buf) = va_arg(ap, int); size = 1; } sign = '\0'; break; case 'D': flags |= LONGINT; /*FALLTHROUGH*/ case 'd': case 'i': #ifdef __ALTIVEC__ if (!(flags & VECTOR) && vec_sep != ' ') { fmt = format_anchor; continue; } #endif /* __ALTIVEC__ */ _uquad = SARG(); if ((quad_t)_uquad < 0) { _uquad = -(quad_t)_uquad; old_sign = sign; sign = '-'; } base = DEC; goto number; #ifdef FLOATING_POINT case 'e': case 'E': case 'f': case 'g': case 'G': if (prec == -1) { prec = DEFPREC; } else if ((ch == 'g' || ch == 'G') && prec == 0) { prec = 1; } #ifdef _NO_LONGDBL if (flags & LONGDBL) { _fpvalue = (double) va_arg(ap, _LONG_DOUBLE); #ifdef __ALTIVEC__ } else if (flags & VECTOR) { if (vec_print_count >= 4) { vec_print_count = 4; vec_tmp.v = va_arg(ap, vector int); } _fpvalue = (double)vec_tmp.f[4 - vec_print_count]; } else if (vec_sep != ' ') { fmt = format_anchor; continue; #endif /* __ALTIVEC__ */ } else { _fpvalue = va_arg(ap, double); } /* do this before tricky precision changes */ if (isinf(_fpvalue)) { if (_fpvalue < 0) { old_sign = sign; sign = '-'; } cp = "Inf"; size = 3; break; } if (isnan(_fpvalue)) { cp = "NaN"; size = 3; break; } #else /* !_NO_LONGDBL */ if (flags & LONGDBL) { _fpvalue = va_arg(ap, _LONG_DOUBLE); #ifdef __ALTIVEC__ } else if (flags & VECTOR) { if (vec_print_count >= 4) { vec_print_count = 4; vec_tmp.v = va_arg(ap, vector int); } _fpvalue = (_LONG_DOUBLE)k.f[4 - vec_print_count]; #endif /* __ALTIVEC__ */ } else { _fpvalue = (_LONG_DOUBLE)va_arg(ap, double); } /* do this before tricky precision changes */ tmp = _ldcheck (&_fpvalue); if (tmp == 2) { if (_fpvalue < 0) { old_sign = sign; sign = '-'; } cp = "Inf"; size = 3; break; } if (tmp == 1) { cp = "NaN"; size = 3; break; } #endif /* !_NO_LONGDBL */ flags |= FPT; cp = cvt(data, _fpvalue, prec, flags, &softsign, &expt, ch, &ndig); if (ch == 'g' || ch == 'G') { if (expt <= -4 || expt > prec) { old_ch = ch; ch = (ch == 'g') ? 'e' : 'E'; } else ch = 'g'; } if (ch <= 'e') { /* 'e' or 'E' fmt */ --expt; expsize = exponent(expstr, expt, ch); size = expsize + ndig; if (ndig > 1 || flags & ALT) ++size; } else if (ch == 'f') { /* f fmt */ if (expt > 0) { size = expt; if (prec || flags & ALT) size += prec + 1; } else /* "0.X" */ size = (prec || flags & ALT) ? prec + 2 : 1; } else if (expt >= ndig) { /* fixed g fmt */ size = expt; if (flags & ALT) ++size; } else size = ndig + (expt > 0 ? 1 : 2 - expt); if (softsign) { old_sign = sign; sign = '-'; } break; #endif /* FLOATING_POINT */ #ifdef __SPE__ case 'r': flags |= FIXEDPOINT; _uquad = SFPARG(); if ((quad_t)_uquad < 0) { sign = '-'; _uquad = -(quad_t)_uquad; } if (flags & SHORTINT) _uquad <<= (sizeof(quad_t) - sizeof(short)) * 8 + 1; else if (flags & LONGINT) _uquad <<= 1; else _uquad <<= (sizeof(quad_t) - sizeof(long)) * 8 + 1; if (_uquad == 0 && sign) { /* we have -1.0 which has to be handled special */ cp = "100000"; expt = 1; ndig = 6; break; } goto fixed_nosign; case 'R': flags |= FIXEDPOINT; _uquad = UFPARG(); if (flags & SHORTINT) _uquad <<= (sizeof(quad_t) - sizeof(short)) * 8; else if (!(flags & LONGINT)) _uquad <<= (sizeof(quad_t) - sizeof(long)) * 8; fixed_nosign: if (prec == -1) prec = DEFPREC; #ifndef _NO_LONGLONG cp = cvt_ufix64 (data, _uquad, prec, &expt, &ndig); #else cp = cvs_ufix32 (data, _uquad, prec, &expt, &ndig); #endif /* act like %f of format "0.X" */ size = prec + 2; break; #endif /* __SPE__ */ case 'n': #ifdef __ALTIVEC__ if (flags & VECTOR) { fmt = format_anchor; continue; } #endif /* __ALTIVEC__ */ #ifndef _NO_LONGLONG if (flags & QUADINT) *va_arg(ap, quad_t *) = ret; else #endif if (flags & LONGINT) *va_arg(ap, long *) = ret; else if (flags & SHORTINT) *va_arg(ap, short *) = ret; else *va_arg(ap, int *) = ret; continue; /* no output */ case 'O': flags |= LONGINT; /*FALLTHROUGH*/ case 'o': #ifdef __ALTIVEC__ if (!(flags & VECTOR) && vec_sep != ' ') { fmt = format_anchor; continue; } #endif /* __ALTIVEC__ */ _uquad = UARG(); base = OCT; goto nosign; case 'p': /* * ``The argument shall be a pointer to void. The * value of the pointer is converted to a sequence * of printable characters, in an implementation- * defined manner.'' * -- ANSI X3J11 */ /* NOSTRICT */ #ifdef __ALTIVEC__ if (flags & VECTOR) _uquad = UARG(); else if (vec_sep != ' ') { fmt = format_anchor; continue; } else #endif /* __ALTIVEC__ */ _uquad = (u_long)(unsigned _POINTER_INT)va_arg(ap, void *); base = HEX; xdigs = "0123456789abcdef"; flags |= HEXPREFIX; ch = 'x'; goto nosign; case 's': #ifdef __ALTIVEC__ if (flags & VECTOR) { fmt = format_anchor; continue; } #endif /* __ALTIVEC__ */ if ((cp = va_arg(ap, char *)) == NULL) cp = "(null)"; if (prec >= 0) { /* * can't use strlen; can only look for the * NUL in the first `prec' characters, and * strlen() will go further. */ char *p = memchr(cp, 0, prec); if (p != NULL) { size = p - cp; if (size > prec) size = prec; } else size = prec; } else size = strlen(cp); sign = '\0'; break; case 'U': flags |= LONGINT; /*FALLTHROUGH*/ case 'u': #ifdef __ALTIVEC__ if (!(flags & VECTOR) && vec_sep != ' ') { fmt = format_anchor; continue; } #endif /* __ALTIVEC__ */ _uquad = UARG(); base = DEC; goto nosign; case 'X': xdigs = "0123456789ABCDEF"; goto hex; case 'x': xdigs = "0123456789abcdef"; #ifdef __ALTIVEC__ if (!(flags & VECTOR) && vec_sep != ' ') { fmt = format_anchor; continue; } #endif /* __ALTIVEC__ */ hex: _uquad = UARG(); base = HEX; /* leading 0x/X only if non-zero */ if (flags & ALT && _uquad != 0) flags |= HEXPREFIX; /* unsigned conversions */ nosign: sign = '\0'; /* * ``... diouXx conversions ... if a precision is * specified, the 0 flag will be ignored.'' * -- ANSI X3J11 */ number: if ((dprec = prec) >= 0) flags &= ~ZEROPAD; /* * ``The result of converting a zero value with an * explicit precision of zero is no characters.'' * -- ANSI X3J11 */ cp = buf + BUF; if (_uquad != 0 || prec != 0) { /* * Unsigned mod is hard, and unsigned mod * by a constant is easier than that by * a variable; hence this switch. */ switch (base) { case OCT: do { *--cp = to_char(_uquad & 7); _uquad >>= 3; } while (_uquad); /* handle octal leading 0 */ if (flags & ALT && *cp != '0') *--cp = '0'; break; case DEC: /* many numbers are 1 digit */ while (_uquad >= 10) { *--cp = to_char(_uquad % 10); _uquad /= 10; } *--cp = to_char(_uquad); break; case HEX: do { *--cp = xdigs[_uquad & 15]; _uquad >>= 4; } while (_uquad); break; default: cp = "bug in vfprintf: bad base"; size = strlen(cp); goto skipsize; } } /* * ...result is to be converted to an 'alternate form'. * For o conversion, it increases the precision to force * the first digit of the result to be a zero." * -- ANSI X3J11 * * To demonstrate this case, compile and run: * printf ("%#.0o",0); */ else if (base == OCT && (flags & ALT)) *--cp = '0'; size = buf + BUF - cp; skipsize: break; default: /* "%?" prints ?, unless ? is NUL */ flags &= ~VECTOR; if (ch == '\0') goto done; /* pretend it was %c with argument ch */ cp = buf; *cp = ch; size = 1; sign = '\0'; break; } /* * All reasonable formats wind up here. At this point, `cp' * points to a string which (if not flags&LADJUST) should be * padded out to `width' places. If flags&ZEROPAD, it should * first be prefixed by any sign or other prefix; otherwise, * it should be blank padded before the prefix is emitted. * After any left-hand padding and prefixing, emit zeroes * required by a decimal [diouxX] precision, then print the * string proper, then emit zeroes required by any leftover * floating precision; finally, if LADJUST, pad with blanks. * * Compute actual size, so we know how much to pad. * size excludes decimal prec; realsz includes it. */ realsz = dprec > size ? dprec : size; if (sign) realsz++; else if (flags & HEXPREFIX) realsz+= 2; /* right-adjusting blank padding */ if ((flags & (LADJUST|ZEROPAD)) == 0) PAD(width - realsz, blanks); /* prefix */ if (sign) { PRINT(&sign, 1); } else if (flags & HEXPREFIX) { ox[0] = '0'; ox[1] = ch; PRINT(ox, 2); } /* right-adjusting zero padding */ if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) PAD(width - realsz, zeroes); /* leading zeroes from decimal precision */ PAD(dprec - size, zeroes); /* the string or number proper */ #ifdef FLOATING_POINT if ((flags & FPT) == 0) { #ifdef __SPE__ if (flags & FIXEDPOINT) { if (_uquad == 0 && !sign) { /* kludge for __dtoa irregularity */ PRINT("0", 1); if (expt < ndig || (flags & ALT) != 0) { PRINT(decimal_point, 1); PAD(ndig - 1, zeroes); } } else if (expt <= 0) { PRINT("0", 1); if(expt || ndig) { PRINT(decimal_point, 1); PAD(-expt, zeroes); PRINT(cp, ndig); } } else if (expt >= ndig) { PRINT(cp, ndig); PAD(expt - ndig, zeroes); if (flags & ALT) PRINT(".", 1); } else { PRINT(cp, expt); cp += expt; PRINT(".", 1); PRINT(cp, ndig-expt); } } else #endif /* __SPE__ */ PRINT(cp, size); } else { /* glue together f_p fragments */ if (ch >= 'f') { /* 'f' or 'g' */ if (_fpvalue == 0) { /* kludge for __dtoa irregularity */ PRINT("0", 1); if (expt < ndig || (flags & ALT) != 0) { PRINT(decimal_point, 1); PAD(ndig - 1, zeroes); } } else if (expt <= 0) { PRINT("0", 1); if(expt || ndig) { PRINT(decimal_point, 1); PAD(-expt, zeroes); PRINT(cp, ndig); } } else if (expt >= ndig) { PRINT(cp, ndig); PAD(expt - ndig, zeroes); if (flags & ALT) PRINT(".", 1); } else { PRINT(cp, expt); cp += expt; PRINT(".", 1); PRINT(cp, ndig-expt); } } else { /* 'e' or 'E' */ if (ndig > 1 || flags & ALT) { ox[0] = *cp++; ox[1] = '.'; PRINT(ox, 2); if (_fpvalue) { PRINT(cp, ndig-1); } else /* 0.[0..] */ /* __dtoa irregularity */ PAD(ndig - 1, zeroes); } else /* XeYYY */ PRINT(cp, 1); PRINT(expstr, expsize); } } #else PRINT(cp, size); #endif /* left-adjusting padding (always blank) */ if (flags & LADJUST) PAD(width - realsz, blanks); /* finally, adjust ret */ ret += width > realsz ? width : realsz; #ifdef __ALTIVEC__ if ((flags & VECTOR) && vec_print_count-- > 1) { /* add vector separator */ if (ch != 'c' || vec_sep != ' ') { PRINT(&vec_sep, 1); ret += 1; } FLUSH(); sign = old_sign; ch = old_ch; goto reswitch; } #endif /* __ALTIVEC__ */ FLUSH(); /* copy out the I/O vectors */ } done: FLUSH(); error: return (__sferror(fp) ? EOF : ret); /* NOTREACHED */ } #ifdef FLOATING_POINT #ifdef _NO_LONGDBL extern char *_dtoa_r _PARAMS((struct _reent *, double, int, int, int *, int *, char **)); #else extern char *_ldtoa_r _PARAMS((struct _reent *, _LONG_DOUBLE, int, int, int *, int *, char **)); #undef word0 #define word0(x) ldword0(x) #endif static char * cvt(data, value, ndigits, flags, sign, decpt, ch, length) struct _reent *data; #ifdef _NO_LONGDBL double value; #else _LONG_DOUBLE value; #endif int ndigits, flags, *decpt, ch, *length; char *sign; { int mode, dsgn; char *digits, *bp, *rve; #ifdef _NO_LONGDBL union double_union tmp; #else struct ldieee *ldptr; #endif if (ch == 'f') { mode = 3; /* ndigits after the decimal point */ } else { /* To obtain ndigits after the decimal point for the 'e' * and 'E' formats, round to ndigits + 1 significant * figures. */ if (ch == 'e' || ch == 'E') { ndigits++; } mode = 2; /* ndigits significant digits */ } #ifdef _NO_LONGDBL tmp.d = value; if (word0(tmp) & Sign_bit) { /* this will check for < 0 and -0.0 */ value = -value; *sign = '-'; } else *sign = '\000'; digits = _dtoa_r(data, value, mode, ndigits, decpt, &dsgn, &rve); #else /* !_NO_LONGDBL */ ldptr = (struct ldieee *)&value; if (ldptr->sign) { /* this will check for < 0 and -0.0 */ value = -value; *sign = '-'; } else *sign = '\000'; digits = _ldtoa_r(data, value, mode, ndigits, decpt, &dsgn, &rve); #endif /* !_NO_LONGDBL */ if ((ch != 'g' && ch != 'G') || flags & ALT) { /* Print trailing zeros */ bp = digits + ndigits; if (ch == 'f') { if (*digits == '0' && value) *decpt = -ndigits + 1; bp += *decpt; } if (value == 0) /* kludge for __dtoa irregularity */ rve = bp; while (rve < bp) *rve++ = '0'; } *length = rve - digits; return (digits); } static int exponent(p0, exp, fmtch) char *p0; int exp, fmtch; { register char *p, *t; char expbuf[40]; p = p0; *p++ = fmtch; if (exp < 0) { exp = -exp; *p++ = '-'; } else *p++ = '+'; t = expbuf + 40; if (exp > 9) { do { *--t = to_char(exp % 10); } while ((exp /= 10) > 9); *--t = to_char(exp); for (; t < expbuf + 40; *p++ = *t++); } else { *p++ = '0'; *p++ = to_char(exp); } return (p - p0); } #endif /* FLOATING_POINT */ #ifdef __SPE__ extern char *_ufix64toa_r _PARAMS((struct _reent *, unsigned long long, int, int, int *, int *, char **)); static char * cvt_ufix64 (data, value, ndigits, decpt, length) struct _reent *data; unsigned long long value; int ndigits, *decpt, *length; { int dsgn; char *digits, *bp, *rve; /* treat the same as %f format and use mode=3 */ digits = _ufix64toa_r (data, value, 3, ndigits, decpt, &dsgn, &rve); /* print trailing zeroes */ bp = digits + ndigits; if (*digits == '0' && value) *decpt = -ndigits + 1; bp += *decpt; if (value == 0) /* kludge for __dtoa irregularity */ rve = bp; while (rve < bp) *rve++ = '0'; *length = rve - digits; return (digits); } #endif /* __SPE__ */
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