📄 libm.h

📁 操作系统SunOS 4.1.3版本的源码
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/*	@(#)libm.h 1.1 92/07/30 SMI	*//* * Copyright (c) 1988 by Sun Microsystems, Inc. */#define TRUE  1#define FALSE 0extern double SVID_libm_err();/*  * IEEE double precision constants  */static double align__double = 0.0;#ifdef i386static long ln2x[] = 		{ 0xfefa39ef, 0x3fe62e42 };static long ln2hix[] = 		{ 0xfee00000, 0x3fe62e42 };static long ln2lox[] = 		{ 0x35793c76, 0x3dea39ef };static long NaNx[] = 		{ 0xffffffff, 0x7fffffff };static long sNaNx[] = 		{ 0x00000001, 0x7ff00000 };static long Infx[] = 		{ 0x00000000, 0x7ff00000 };static long two52x[] = 		{ 0x00000000, 0x43300000 };static long twom52x[] = 	{ 0x00000000, 0x3cb00000 };static long PI_RZx[] = 		{ 0x54442d18, 0x400921fb };static long sqrt2x[] = 		{ 0x667f3bcd, 0x3ff6a09e };/* rounded up */static long sqrt2p1_hix[] = 	{ 0x333f9de6, 0x4003504f };static long sqrt2p1_lox[] = 	{ 0xf626cdd5, 0x3ca21165 };static long fmaxx[] = 		{ 0xffffffff, 0x7fefffff };static long fminx[] = 		{ 0x00000001, 0x00000000 };static long fminnx[] = 		{ 0x00000000, 0x00100000 };static long fmaxsx[] = 		{ 0xffffffff, 0x000fffff };static long lnovftx[] = 	{ 0xfefa39ef, 0x40862e42 };/* chopped */static long lnunftx[] = 	{ 0xd52d3052, 0xc0874910 };/* ln(minf/2) chop*/static long invln2x[] = 	{ 0x652b82fe, 0x3ff71547 };#elsestatic long ln2x[] = 		{ 0x3fe62e42, 0xfefa39ef };static long ln2hix[] = 		{ 0x3fe62e42, 0xfee00000 };static long ln2lox[] = 		{ 0x3dea39ef, 0x35793c76 };static long NaNx[] = 		{ 0x7fffffff, 0xffffffff };static long sNaNx[] = 		{ 0x7ff00000, 0x00000001 };static long Infx[] = 		{ 0x7ff00000, 0x00000000 };static long two52x[] = 		{ 0x43300000, 0x00000000 };static long twom52x[] = 	{ 0x3cb00000, 0x00000000 };static long PI_RZx[] = 		{ 0x400921fb, 0x54442d18 };static long sqrt2x[] = 		{ 0x3ff6a09e, 0x667f3bcd };/* rounded up */static long sqrt2p1_hix[] = 	{ 0x4003504f, 0x333f9de6 };static long sqrt2p1_lox[] = 	{ 0x3ca21165, 0xf626cdd5 };static long fmaxx[] = 		{ 0x7fefffff, 0xffffffff };static long fminx[] = 		{ 0x00000000, 0x00000001 };static long fminnx[] = 		{ 0x00100000, 0x00000000 };static long fmaxsx[] = 		{ 0x000fffff, 0xffffffff };static long lnovftx[] = 	{ 0x40862e42, 0xfefa39ef };/* chopped */static long lnunftx[] = 	{ 0xc0874910, 0xd52d3052 };/* ln(minf/2) chop*/static long invln2x[] = 	{ 0x3ff71547, 0x652b82fe };#endif#define ln2 		(*(double*)ln2x)#define NaN 		(*(double*)NaNx)#define sNaN 		(*(double*)sNaNx)#define Inf 		(*(double*)Infx)#define two52 		(*(double*)two52x)#define twom52 		(*(double*)twom52x)#define ln2hi 		(*(double*)ln2hix)#define ln2lo 		(*(double*)ln2lox)#define PI_RZ 		(*(double*)PI_RZx)#define sqrt2 		(*(double*)sqrt2x)#define sqrt2p1_hi 	(*(double*)sqrt2p1_hix)#define sqrt2p1_lo 	(*(double*)sqrt2p1_lox)#define fmax 		(*(double*)fmaxx)#define fmin 		(*(double*)fminx)#define fminn 		(*(double*)fminnx)#define fmaxs 		(*(double*)fmaxsx)#define lnovft 		(*(double*)lnovftx)#define lnunft 		(*(double*)lnunftx)#define invln2 		(*(double*)invln2x)
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