X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=platform%2Fgp2x%2FuClibc%2Fmath_private.h;fp=platform%2Fgp2x%2FuClibc%2Fmath_private.h;h=0000000000000000000000000000000000000000;hb=42c7b14797fad5ad8adc822e8d0cebf326eb620b;hp=134b33523f25618b426039d9d12b355d4780fd1a;hpb=b837b69b3fcff1737431c8be1c78d1cfd64003a6;p=picodrive.git diff --git a/platform/gp2x/uClibc/math_private.h b/platform/gp2x/uClibc/math_private.h deleted file mode 100644 index 134b335..0000000 --- a/platform/gp2x/uClibc/math_private.h +++ /dev/null @@ -1,129 +0,0 @@ -/* - * ==================================================== - * 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 - * $Id: math_private.h,v 1.3 2004/02/09 07:10:38 andersen Exp $ - */ - -#ifndef _MATH_PRIVATE_H_ -#define _MATH_PRIVATE_H_ - -#include -#include - -/* 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. */ - -/* - * Math on arm is special: - * For FPA, float words are always big-endian. - * For VFP, floats words follow the memory system mode. - */ - -#if (__BYTE_ORDER == __BIG_ENDIAN) || \ - (!defined(__VFP_FP__) && (defined(__arm__) || defined(__thumb__))) - -typedef union -{ - double value; - struct - { - u_int32_t msw; - u_int32_t lsw; - } parts; -} ieee_double_shape_type; - -#else - -typedef union -{ - double value; - struct - { - u_int32_t lsw; - u_int32_t msw; - } parts; -} ieee_double_shape_type; - -#endif - -/* Get two 32 bit ints from a double. */ - -#define EXTRACT_WORDS(ix0,ix1,d) \ -do { \ - ieee_double_shape_type ew_u; \ - ew_u.value = (d); \ - (ix0) = ew_u.parts.msw; \ - (ix1) = ew_u.parts.lsw; \ -} while (0) - -/* Get the more significant 32 bit int from a double. */ - -#define GET_HIGH_WORD(i,d) \ -do { \ - ieee_double_shape_type gh_u; \ - gh_u.value = (d); \ - (i) = gh_u.parts.msw; \ -} while (0) - -/* Get the less significant 32 bit int from a double. */ - -#define GET_LOW_WORD(i,d) \ -do { \ - ieee_double_shape_type gl_u; \ - gl_u.value = (d); \ - (i) = gl_u.parts.lsw; \ -} while (0) - -/* Set a double from two 32 bit ints. */ - -#define INSERT_WORDS(d,ix0,ix1) \ -do { \ - ieee_double_shape_type iw_u; \ - iw_u.parts.msw = (ix0); \ - iw_u.parts.lsw = (ix1); \ - (d) = iw_u.value; \ -} while (0) - -/* Set the more significant 32 bits of a double from an int. */ - -#define SET_HIGH_WORD(d,v) \ -do { \ - ieee_double_shape_type sh_u; \ - sh_u.value = (d); \ - sh_u.parts.msw = (v); \ - (d) = sh_u.value; \ -} while (0) - -/* Set the less significant 32 bits of a double from an int. */ - -#define SET_LOW_WORD(d,v) \ -do { \ - ieee_double_shape_type sl_u; \ - sl_u.value = (d); \ - sl_u.parts.lsw = (v); \ - (d) = sl_u.value; \ -} while (0) - - -#endif /* _MATH_PRIVATE_H_ */