mc2-scripts-and-benchmarks.git - Benchmarks and execution scripts for testing spatial isolation and SMT interference in MC^2

diff options

Diffstat (limited to 'SD-VBS/benchmarks/sift/data/sim/m.txt')

0 files changed, 0 insertions, 0 deletions

/* * ==================================================== * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. * * Developed at SunPro, a Sun Microsystems, Inc. business. * Permission to use, copy, modify, and distribute this * software is freely granted, provided that this notice * is preserved. * ==================================================== */ /* * from: @(#)fdlibm.h 5.1 93/09/24 */ #ifndef _MATH_PRIVATE_H_ #define _MATH_PRIVATE_H_ #include "wcclibm.h" //#include <endian.h> //#include <sys/types.h> /* A representation of a double as a union. */ union ieee754_double { double d; /* This is the IEEE 754 double-precision format. */ struct { /* Together these comprise the mantissa. */ unsigned int mantissa1:32; unsigned int mantissa0:20; unsigned int exponent:11; unsigned int negative:1; } ieee; /* This format makes it easier to see if a NaN is a signalling NaN. */ struct { /* Together these comprise the mantissa. */ unsigned int mantissa1:32; unsigned int mantissa0:19; unsigned int quiet_nan:1; unsigned int exponent:11; unsigned int negative:1; } ieee_nan; }; /* The original fdlibm code used statements like: n0 = ((*(int*)&one)>>29)^1; * index of high word * ix0 = *(n0+(int*)&x); * high word of x * ix1 = *((1-n0)+(int*)&x); * low word of x * to dig two 32 bit words out of the 64 bit IEEE floating point value. That is non-ANSI, and, moreover, the gcc instruction scheduler gets it wrong. We instead use the following macros. Unlike the original code, we determine the endianness at compile time, not at run time; I don't see much benefit to selecting endianness at run time. */ /* A union which permits us to convert between a double and two 32 bit ints. */ /* #if __FLOAT_WORD_ORDER == BIG_ENDIAN */ /* #warning USING Big Endian float word order */ /* typedef union */ /* { */ /* double value; */ /* struct */ /* { */ /* u_int16_t msw; */ /* u_int16_t lsw; */ /* } parts; */ /* } ieeeDoubleShapeType; */ /* #endif */ /* #if __FLOAT_WORD_ORDER == LITTLE_ENDIAN */ /* #warning USING Little Endian float word order */ typedef union { double value; struct { u_int16_t lsw; u_int16_t msw; } parts; } ieeeDoubleShapeType; /* #endif */ /* Get two 32 bit ints from a double. */ #define EXTRACT_WORDS(ix0,ix1,d) \ { \ ieeeDoubleShapeType ew_u; \ ew_u.value = (d); \ (ix0) = ew_u.parts.msw; \ (ix1) = ew_u.parts.lsw; \ } /* Get the more significant 32 bit int from a double. */ #define GET_HIGH_WORD(i,d) \ { \ ieeeDoubleShapeType gh_u; \ gh_u.value = (d); \ (i) = gh_u.parts.msw; \ } /* Get the less significant 32 bit int from a double. */ #define GET_LOW_WORD(i,d) \ { \ ieeeDoubleShapeType gl_u; \ gl_u.value = (d); \ (i) = gl_u.parts.lsw; \ } /* Set a double from two 32 bit ints. */ #define INSERT_WORDS(d,ix0,ix1) \ { \ ieeeDoubleShapeType iw_u; \ iw_u.parts.msw = (ix0); \ iw_u.parts.lsw = (ix1); \ (d) = iw_u.value; \ } /* Set the more significant 32 bits of a double from an int. */ #define SET_HIGH_WORD(d,v) \ { \ ieeeDoubleShapeType sh_u; \ sh_u.value = (d); \ sh_u.parts.msw = (v); \ (d) = sh_u.value; \ }


context:
space:
mode: