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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [include/] [ieeefp.h] - Rev 262
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#ifndef _IEEE_FP_H_ #define _IEEE_FP_H_ #include "_ansi.h" #include <machine/ieeefp.h> _BEGIN_STD_C /* FIXME FIXME FIXME: Neither of __ieee_{float,double}_shape_tape seem to be used anywhere except in libm/test. If that is the case, please delete these from here. If that is not the case, please insert documentation here describing why they're needed. */ #ifdef __IEEE_BIG_ENDIAN typedef union { double value; struct { unsigned int sign : 1; unsigned int exponent: 11; unsigned int fraction0:4; unsigned int fraction1:16; unsigned int fraction2:16; unsigned int fraction3:16; } number; struct { unsigned int sign : 1; unsigned int exponent: 11; unsigned int quiet:1; unsigned int function0:3; unsigned int function1:16; unsigned int function2:16; unsigned int function3:16; } nan; struct { unsigned long msw; unsigned long lsw; } parts; long aslong[2]; } __ieee_double_shape_type; #endif #ifdef __IEEE_LITTLE_ENDIAN typedef union { double value; struct { #ifdef __SMALL_BITFIELDS unsigned int fraction3:16; unsigned int fraction2:16; unsigned int fraction1:16; unsigned int fraction0: 4; #else unsigned int fraction1:32; unsigned int fraction0:20; #endif unsigned int exponent :11; unsigned int sign : 1; } number; struct { #ifdef __SMALL_BITFIELDS unsigned int function3:16; unsigned int function2:16; unsigned int function1:16; unsigned int function0:3; #else unsigned int function1:32; unsigned int function0:19; #endif unsigned int quiet:1; unsigned int exponent: 11; unsigned int sign : 1; } nan; struct { unsigned long lsw; unsigned long msw; } parts; long aslong[2]; } __ieee_double_shape_type; #endif #ifdef __IEEE_BIG_ENDIAN typedef union { float value; struct { unsigned int sign : 1; unsigned int exponent: 8; unsigned int fraction0: 7; unsigned int fraction1: 16; } number; struct { unsigned int sign:1; unsigned int exponent:8; unsigned int quiet:1; unsigned int function0:6; unsigned int function1:16; } nan; long p1; } __ieee_float_shape_type; #endif #ifdef __IEEE_LITTLE_ENDIAN typedef union { float value; struct { unsigned int fraction0: 7; unsigned int fraction1: 16; unsigned int exponent: 8; unsigned int sign : 1; } number; struct { unsigned int function1:16; unsigned int function0:6; unsigned int quiet:1; unsigned int exponent:8; unsigned int sign:1; } nan; long p1; } __ieee_float_shape_type; #endif /* FLOATING ROUNDING */ typedef int fp_rnd; #define FP_RN 0 /* Round to nearest */ #define FP_RM 1 /* Round down */ #define FP_RP 2 /* Round up */ #define FP_RZ 3 /* Round to zero (trunate) */ fp_rnd _EXFUN(fpgetround,(void)); fp_rnd _EXFUN(fpsetround, (fp_rnd)); /* EXCEPTIONS */ typedef int fp_except; #define FP_X_INV 0x10 /* Invalid operation */ #define FP_X_DX 0x80 /* Divide by zero */ #define FP_X_OFL 0x04 /* Overflow exception */ #define FP_X_UFL 0x02 /* Underflow exception */ #define FP_X_IMP 0x01 /* imprecise exception */ fp_except _EXFUN(fpgetmask,(void)); fp_except _EXFUN(fpsetmask,(fp_except)); fp_except _EXFUN(fpgetsticky,(void)); fp_except _EXFUN(fpsetsticky, (fp_except)); /* INTEGER ROUNDING */ typedef int fp_rdi; #define FP_RDI_TOZ 0 /* Round to Zero */ #define FP_RDI_RD 1 /* Follow float mode */ fp_rdi _EXFUN(fpgetroundtoi,(void)); fp_rdi _EXFUN(fpsetroundtoi,(fp_rdi)); #undef isnan #undef isinf int _EXFUN(isnan, (double)); int _EXFUN(isinf, (double)); int _EXFUN(finite, (double)); int _EXFUN(isnanf, (float)); int _EXFUN(isinff, (float)); int _EXFUN(finitef, (float)); #define __IEEE_DBL_EXPBIAS 1023 #define __IEEE_FLT_EXPBIAS 127 #define __IEEE_DBL_EXPLEN 11 #define __IEEE_FLT_EXPLEN 8 #define __IEEE_DBL_FRACLEN (64 - (__IEEE_DBL_EXPLEN + 1)) #define __IEEE_FLT_FRACLEN (32 - (__IEEE_FLT_EXPLEN + 1)) #define __IEEE_DBL_MAXPOWTWO ((double)(1L << 32 - 2) * (1L << (32-11) - 32 + 1)) #define __IEEE_FLT_MAXPOWTWO ((float)(1L << (32-8) - 1)) #define __IEEE_DBL_NAN_EXP 0x7ff #define __IEEE_FLT_NAN_EXP 0xff #ifndef __ieeefp_isnanf #define __ieeefp_isnanf(x) (((*(long *)&(x) & 0x7f800000L)==0x7f800000L) && \ ((*(long *)&(x) & 0x007fffffL)!=0000000000L)) #endif #define isnanf(x) __ieeefp_isnanf(x) #ifndef __ieeefp_isinff #define __ieeefp_isinff(x) (((*(long *)&(x) & 0x7f800000L)==0x7f800000L) && \ ((*(long *)&(x) & 0x007fffffL)==0000000000L)) #endif #define isinff(x) __ieeefp_isinff(x) #ifndef __ieeefp_finitef #define __ieeefp_finitef(x) (((*(long *)&(x) & 0x7f800000L)!=0x7f800000L)) #endif #define finitef(x) __ieeefp_finitef(x) #ifdef _DOUBLE_IS_32BITS #undef __IEEE_DBL_EXPBIAS #define __IEEE_DBL_EXPBIAS __IEEE_FLT_EXPBIAS #undef __IEEE_DBL_EXPLEN #define __IEEE_DBL_EXPLEN __IEEE_FLT_EXPLEN #undef __IEEE_DBL_FRACLEN #define __IEEE_DBL_FRACLEN __IEEE_FLT_FRACLEN #undef __IEEE_DBL_MAXPOWTWO #define __IEEE_DBL_MAXPOWTWO __IEEE_FLT_MAXPOWTWO #undef __IEEE_DBL_NAN_EXP #define __IEEE_DBL_NAN_EXP __IEEE_FLT_NAN_EXP #undef __ieee_double_shape_type #define __ieee_double_shape_type __ieee_float_shape_type #endif /* _DOUBLE_IS_32BITS */ _END_STD_C #endif /* _IEEE_FP_H_ */
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