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Diffstat (limited to 'newlib/libc/stdio/vfieeefp.h')
-rw-r--r-- | newlib/libc/stdio/vfieeefp.h | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/newlib/libc/stdio/vfieeefp.h b/newlib/libc/stdio/vfieeefp.h deleted file mode 100644 index 1b240fcde..000000000 --- a/newlib/libc/stdio/vfieeefp.h +++ /dev/null @@ -1,284 +0,0 @@ -/**************************************************************** - * - * The author of this software is David M. Gay. - * - * Copyright (c) 1991 by AT&T. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose without fee is hereby granted, provided that this entire notice - * is included in all copies of any software which is or includes a copy - * or modification of this software and in all copies of the supporting - * documentation for such software. - * - * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED - * WARRANTY. IN PARTICULAR, NEITHER THE AUTHOR NOR AT&T MAKES ANY - * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY - * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. - * - ***************************************************************/ - -/* Please send bug reports to - David M. Gay - AT&T Bell Laboratories, Room 2C-463 - 600 Mountain Avenue - Murray Hill, NJ 07974-2070 - U.S.A. - dmg@research.att.com or research!dmg - */ - -/* This header file is a modification of mprec.h that only contains floating - point union code. */ - -#include <ieeefp.h> -#include <math.h> -#include <float.h> -#include <errno.h> -#include <sys/config.h> - -#ifdef __IEEE_LITTLE_ENDIAN -#define IEEE_8087 -#endif - -#ifdef __IEEE_BIG_ENDIAN -#define IEEE_MC68k -#endif - -#ifdef __Z8000__ -#define Just_16 -#endif - -#ifdef Unsigned_Shifts -#define Sign_Extend(a,b) if (b < 0) a |= (__uint32_t)0xffff0000; -#else -#define Sign_Extend(a,b) /*no-op*/ -#endif - -#if defined(IEEE_8087) + defined(IEEE_MC68k) + defined(VAX) + defined(IBM) != 1 -Exactly one of IEEE_8087, IEEE_MC68k, VAX, or IBM should be defined. -#endif - -#ifdef WANT_IO_LONG_DBL -/* If we are going to examine or modify specific bits in a long double using - the lword0 or lwordx macros, then we must wrap the long double inside - a union. This is necessary to avoid undefined behavior according to - the ANSI C spec. */ - -#ifdef IEEE_8087 -#if LDBL_MANT_DIG == 24 -struct ldieee -{ - unsigned manh:23; - unsigned exp:8; - unsigned sign:1; -}; -#elif LDBL_MANT_DIG == 53 -struct ldieee -{ - unsigned manl:20; - unsigned manh:32; - unsigned exp:11; - unsigned sign:1; -}; -#elif LDBL_MANT_DIG == 64 -struct ldieee -{ - unsigned manl:32; - unsigned manh:32; - unsigned exp:15; - unsigned sign:1; -}; -#elif LDBL_MANT_DIG > 64 -struct ldieee -{ - unsigned manl3:16; - unsigned manl2:32; - unsigned manl:32; - unsigned manh:32; - unsigned exp:15; - unsigned sign:1; -}; -#endif /* LDBL_MANT_DIG */ -#else /* !IEEE_8087 */ -#if LDBL_MANT_DIG == 24 -struct ldieee -{ - unsigned sign:1; - unsigned exp:8; - unsigned manh:23; -}; -#elif LDBL_MANT_DIG == 53 -struct ldieee -{ - unsigned sign:1; - unsigned exp:11; - unsigned manh:32; - unsigned manl:20; -}; -#elif LDBL_MANT_DIG == 64 -struct ldieee -{ - unsigned sign:1; - unsigned exp:15; - unsigned manh:32; - unsigned manl:32; -}; -#elif LDBL_MANT_DIG > 64 -struct ldieee -{ - unsigned sign:1; - unsigned exp:15; - unsigned manh:32; - unsigned manl:32; - unsigned manl2:32; - unsigned manl3;16; -}; -#endif /* LDBL_MANT_DIG */ -#endif /* !IEEE_8087 */ -#endif /* WANT_IO_LONG_DBL */ - -/* If we are going to examine or modify specific bits in a double using - the word0 and/or word1 macros, then we must wrap the double inside - a union. This is necessary to avoid undefined behavior according to - the ANSI C spec. */ -union double_union -{ - double d; - __uint32_t i[2]; -}; - -#ifdef IEEE_8087 -#define word0(x) (x.i[1]) -#define word1(x) (x.i[0]) -#else -#define word0(x) (x.i[0]) -#define word1(x) (x.i[1]) -#endif - -/* #define P DBL_MANT_DIG */ -/* Ten_pmax = floor(P*log(2)/log(5)) */ -/* Bletch = (highest power of 2 < DBL_MAX_10_EXP) / 16 */ -/* Quick_max = floor((P-1)*log(FLT_RADIX)/log(10) - 1) */ -/* Int_max = floor(P*log(FLT_RADIX)/log(10) - 1) */ - -#if defined(IEEE_8087) + defined(IEEE_MC68k) -#if defined (_DOUBLE_IS_32BITS) -#define Exp_shift 23 -#define Exp_shift1 23 -#define Exp_msk1 ((__uint32_t)0x00800000L) -#define Exp_msk11 ((__uint32_t)0x00800000L) -#define Exp_mask ((__uint32_t)0x7f800000L) -#define P 24 -#define Bias 127 -#if 0 -#define IEEE_Arith /* it is, but the code doesn't handle IEEE singles yet */ -#endif -#define Emin (-126) -#define Exp_1 ((__uint32_t)0x3f800000L) -#define Exp_11 ((__uint32_t)0x3f800000L) -#define Ebits 8 -#define Frac_mask ((__uint32_t)0x007fffffL) -#define Frac_mask1 ((__uint32_t)0x007fffffL) -#define Ten_pmax 10 -#define Sign_bit ((__uint32_t)0x80000000L) -#define Ten_pmax 10 -#define Bletch 2 -#define Bndry_mask ((__uint32_t)0x007fffffL) -#define Bndry_mask1 ((__uint32_t)0x007fffffL) -#define LSB 1 -#define Sign_bit ((__uint32_t)0x80000000L) -#define Log2P 1 -#define Tiny0 0 -#define Tiny1 1 -#define Quick_max 5 -#define Int_max 6 -#define Infinite(x) (word0(x) == ((__uint32_t)0x7f800000L)) -#undef word0 -#undef word1 - -#define word0(x) (x.i[0]) -#define word1(x) 0 -#else - -#define Exp_shift 20 -#define Exp_shift1 20 -#define Exp_msk1 ((__uint32_t)0x100000L) -#define Exp_msk11 ((__uint32_t)0x100000L) -#define Exp_mask ((__uint32_t)0x7ff00000L) -#define P 53 -#define Bias 1023 -#define IEEE_Arith -#define Emin (-1022) -#define Exp_1 ((__uint32_t)0x3ff00000L) -#define Exp_11 ((__uint32_t)0x3ff00000L) -#define Ebits 11 -#define Frac_mask ((__uint32_t)0xfffffL) -#define Frac_mask1 ((__uint32_t)0xfffffL) -#define Ten_pmax 22 -#define Bletch 0x10 -#define Bndry_mask ((__uint32_t)0xfffffL) -#define Bndry_mask1 ((__uint32_t)0xfffffL) -#define LSB 1 -#define Sign_bit ((__uint32_t)0x80000000L) -#define Log2P 1 -#define Tiny0 0 -#define Tiny1 1 -#define Quick_max 14 -#define Int_max 14 -#define Infinite(x) (word0(x) == ((__uint32_t)0x7ff00000L)) /* sufficient test for here */ -#endif - -#else -#undef Sudden_Underflow -#define Sudden_Underflow -#ifdef IBM -#define Exp_shift 24 -#define Exp_shift1 24 -#define Exp_msk1 ((__uint32_t)0x1000000L) -#define Exp_msk11 ((__uint32_t)0x1000000L) -#define Exp_mask ((__uint32_t)0x7f000000L) -#define P 14 -#define Bias 65 -#define Exp_1 ((__uint32_t)0x41000000L) -#define Exp_11 ((__uint32_t)0x41000000L) -#define Ebits 8 /* exponent has 7 bits, but 8 is the right value in b2d */ -#define Frac_mask ((__uint32_t)0xffffffL) -#define Frac_mask1 ((__uint32_t)0xffffffL) -#define Bletch 4 -#define Ten_pmax 22 -#define Bndry_mask ((__uint32_t)0xefffffL) -#define Bndry_mask1 ((__uint32_t)0xffffffL) -#define LSB 1 -#define Sign_bit ((__uint32_t)0x80000000L) -#define Log2P 4 -#define Tiny0 ((__uint32_t)0x100000L) -#define Tiny1 0 -#define Quick_max 14 -#define Int_max 15 -#else /* VAX */ -#define Exp_shift 23 -#define Exp_shift1 7 -#define Exp_msk1 0x80 -#define Exp_msk11 ((__uint32_t)0x800000L) -#define Exp_mask ((__uint32_t)0x7f80L) -#define P 56 -#define Bias 129 -#define Exp_1 ((__uint32_t)0x40800000L) -#define Exp_11 ((__uint32_t)0x4080L) -#define Ebits 8 -#define Frac_mask ((__uint32_t)0x7fffffL) -#define Frac_mask1 ((__uint32_t)0xffff007fL) -#define Ten_pmax 24 -#define Bletch 2 -#define Bndry_mask ((__uint32_t)0xffff007fL) -#define Bndry_mask1 ((__uint32_t)0xffff007fL) -#define LSB ((__uint32_t)0x10000L) -#define Sign_bit ((__uint32_t)0x8000L) -#define Log2P 1 -#define Tiny0 0x80 -#define Tiny1 0 -#define Quick_max 15 -#define Int_max 15 -#endif -#endif - - |