diff options
Diffstat (limited to 'libjava/classpath/native/fdlibm/fdlibm.h')
| -rw-r--r-- | libjava/classpath/native/fdlibm/fdlibm.h | 385 |
1 files changed, 211 insertions, 174 deletions
diff --git a/libjava/classpath/native/fdlibm/fdlibm.h b/libjava/classpath/native/fdlibm/fdlibm.h index 13ee449d78e..5dbcdb5234b 100644 --- a/libjava/classpath/native/fdlibm/fdlibm.h +++ b/libjava/classpath/native/fdlibm/fdlibm.h @@ -1,10 +1,9 @@ -/* @(#)fdlibm.h 5.1 93/09/24 */ +/* @(#)fdlibm.h 1.5 04/04/22 */ /* * ==================================================== - * Copyright (C) 1993, 2000 by Sun Microsystems, Inc. All rights reserved. + * Copyright (C) 2004 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. @@ -36,15 +35,71 @@ #undef __P #endif +/* Sometimes it's necessary to define __LITTLE_ENDIAN explicitly + but these catch some common cases. */ + +#if 0 +#if defined(i386) || defined(i486) || \ + defined(intel) || defined(x86) || defined(i86pc) || \ + defined(__alpha) || defined(__osf__) +#define __LITTLE_ENDIAN +#endif + +#ifdef __LITTLE_ENDIAN +#define __HI(x) *(1+(int*)&x) +#define __LO(x) *(int*)&x +#define __HIp(x) *(1+(int*)x) +#define __LOp(x) *(int*)x +#else +#define __HI(x) *(int*)&x +#define __LO(x) *(1+(int*)&x) +#define __HIp(x) *(int*)x +#define __LOp(x) *(1+(int*)x) +#endif +#endif + #ifdef __STDC__ #define __P(p) p #else #define __P(p) () #endif -#ifndef HUGE -#define HUGE ((float)3.40282346638528860e+38) -#endif +/* + * ANSI/POSIX + */ + +extern int signgam; + +#define MAXFLOAT ((float)3.40282346638528860e+38) + +enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix}; + +#define _LIB_VERSION_TYPE enum fdversion +#define _LIB_VERSION _fdlib_version + +/* if global variable _LIB_VERSION is not desirable, one may + * change the following to be a constant by: + * #define _LIB_VERSION_TYPE const enum version + * In that case, after one initializes the value _LIB_VERSION (see + * s_lib_version.c) during compile time, it cannot be modified + * in the middle of a program + */ +extern _LIB_VERSION_TYPE _LIB_VERSION; + +#define _IEEE_ fdlibm_ieee +#define _SVID_ fdlibm_svid +#define _XOPEN_ fdlibm_xopen +#define _POSIX_ fdlibm_posix + +struct exception { + int type; + char *name; + double arg1; + double arg2; + double retval; +}; + +#define HUGE MAXFLOAT /* * set X_TLOSS = pi*2**52, which is possibly defined in <values.h> @@ -53,6 +108,13 @@ #define X_TLOSS 1.41484755040568800000e+16 +#define DOMAIN 1 +#define SING 2 +#define OVERFLOW 3 +#define UNDERFLOW 4 +#define TLOSS 5 +#define PLOSS 6 + /* These typedefs are true for the targets running Java. */ #define _IEEE_LIBM @@ -116,17 +178,42 @@ extern double cbrt __P((double)); extern double logb __P((double)); extern double nextafter __P((double, double)); extern double remainder __P((double, double)); - -/* Functions that are not documented, and are not in <math.h>. */ - -extern double logb __P((double)); #ifdef _SCALB_INT extern double scalb __P((double, int)); #else extern double scalb __P((double, double)); #endif + +extern int matherr __P((struct exception *)); + +/* + * IEEE Test Vector + */ extern double significand __P((double)); +/* + * Functions callable from C, intended to support IEEE arithmetic. + */ +extern double copysign __P((double, double)); +extern int ilogb __P((double)); +extern double rint __P((double)); +extern double scalbn __P((double, int)); + +/* + * BSD math library entry points + */ +extern double expm1 __P((double)); +extern double log1p __P((double)); + +/* + * Reentrant version of gamma & lgamma; passes signgam back by reference + * as the second argument; user must allocate space for signgam. + */ +#ifdef _REENTRANT +extern double gamma_r __P((double, int *)); +extern double lgamma_r __P((double, int *)); +#endif /* _REENTRANT */ + /* ieee style elementary functions */ extern double __ieee754_sqrt __P((double)); extern double __ieee754_acos __P((double)); @@ -141,6 +228,8 @@ extern double __ieee754_fmod __P((double,double)); extern double __ieee754_pow __P((double,double)); extern double __ieee754_lgamma_r __P((double,int *)); extern double __ieee754_gamma_r __P((double,int *)); +extern double __ieee754_lgamma __P((double)); +extern double __ieee754_gamma __P((double)); extern double __ieee754_log10 __P((double)); extern double __ieee754_sinh __P((double)); extern double __ieee754_hypot __P((double,double)); @@ -151,7 +240,7 @@ extern double __ieee754_y1 __P((double)); extern double __ieee754_jn __P((int,double)); extern double __ieee754_yn __P((int,double)); extern double __ieee754_remainder __P((double,double)); -extern int32_t __ieee754_rem_pio2 __P((double,double*)); +extern int32_t __ieee754_rem_pio2 __P((double,double*)); #ifdef _SCALB_INT extern double __ieee754_scalb __P((double,int)); #else @@ -159,172 +248,119 @@ extern double __ieee754_scalb __P((double,double)); #endif /* fdlibm kernel function */ -extern double __kernel_standard __P((double,double,int)); +extern double __kernel_standard __P((double,double,int)); extern double __kernel_sin __P((double,double,int)); extern double __kernel_cos __P((double,double)); extern double __kernel_tan __P((double,double,int)); -extern int __kernel_rem_pio2 __P((double*,double*,int,int,int,const int32_t*)); - -/* Undocumented float functions. */ -extern float logbf __P((float)); -#ifdef _SCALB_INT -extern float scalbf __P((float, int)); -#else -extern float scalbf __P((float, float)); -#endif -extern float significandf __P((float)); - -/* - * Functions callable from C, intended to support IEEE arithmetic. - */ -extern double copysign __P((double, double)); -extern int ilogb __P((double)); -extern double rint __P((double)); -extern float rintf __P((float)); -extern double scalbn __P((double, int)); - -/* ieee style elementary float functions */ -extern float __ieee754_sqrtf __P((float)); -extern float __ieee754_acosf __P((float)); -extern float __ieee754_acoshf __P((float)); -extern float __ieee754_logf __P((float)); -extern float __ieee754_atanhf __P((float)); -extern float __ieee754_asinf __P((float)); -extern float __ieee754_atan2f __P((float,float)); -extern float __ieee754_expf __P((float)); -extern float __ieee754_coshf __P((float)); -extern float __ieee754_fmodf __P((float,float)); -extern float __ieee754_powf __P((float,float)); -extern float __ieee754_lgammaf_r __P((float,int *)); -extern float __ieee754_gammaf_r __P((float,int *)); -extern float __ieee754_log10f __P((float)); -extern float __ieee754_sinhf __P((float)); -extern float __ieee754_hypotf __P((float,float)); -extern float __ieee754_j0f __P((float)); -extern float __ieee754_j1f __P((float)); -extern float __ieee754_y0f __P((float)); -extern float __ieee754_y1f __P((float)); -extern float __ieee754_jnf __P((int,float)); -extern float __ieee754_ynf __P((int,float)); -extern float __ieee754_remainderf __P((float,float)); -extern int32_t __ieee754_rem_pio2f __P((float,float*)); -#ifdef _SCALB_INT -extern float __ieee754_scalbf __P((float,int)); -#else -extern float __ieee754_scalbf __P((float,float)); -#endif - -/* float versions of fdlibm kernel functions */ -extern float __kernel_sinf __P((float,float,int)); -extern float __kernel_cosf __P((float,float)); -extern float __kernel_tanf __P((float,float,int)); -extern int __kernel_rem_pio2f __P((float*,float*,int,int,int,const int32_t*)); - -/* The original 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. */ - -#ifndef __IEEE_BIG_ENDIAN -#ifndef __IEEE_LITTLE_ENDIAN - #error Must define endianness -#endif -#endif - -/* A union which permits us to convert between a double and two 32 bit - ints. */ - -#ifdef __IEEE_BIG_ENDIAN - -typedef union -{ - double value; - struct - { - uint32_t msw; - uint32_t lsw; - } parts; -} ieee_double_shape_type; - -#endif - -#ifdef __IEEE_LITTLE_ENDIAN - -typedef union -{ - double value; - struct - { - uint32_t lsw; - uint32_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) +extern int __kernel_rem_pio2 __P((double*,double*,int,int,int,const int*)); + +/* Classpath extensions */ + +/* The original 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. */ + +#ifndef __IEEE_BIG_ENDIAN +#ifndef __IEEE_LITTLE_ENDIAN +#error Must define endianness +#endif +#endif + +/* A union which permits us to convert between a double and two 32 bit + ints. */ + +#ifdef __IEEE_BIG_ENDIAN + + typedef union + { + double value; + struct + { + uint32_t msw; + uint32_t lsw; + } parts; + } ieee_double_shape_type; + +#endif + +#ifdef __IEEE_LITTLE_ENDIAN + + typedef union + { + double value; + struct + { + uint32_t lsw; + uint32_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) /* A union which permits us to convert between a float and a 32 bit int. */ @@ -358,3 +394,4 @@ do { \ #endif #endif /* __CLASSPATH_FDLIBM_H__ */ + |
