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Diffstat (limited to 'newlib/libc/sys/linux/cmath/math_private.h')
| -rw-r--r-- | newlib/libc/sys/linux/cmath/math_private.h | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/cmath/math_private.h b/newlib/libc/sys/linux/cmath/math_private.h new file mode 100644 index 000000000..48258ec47 --- /dev/null +++ b/newlib/libc/sys/linux/cmath/math_private.h @@ -0,0 +1,354 @@ +/* + * ==================================================== + * 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 + * $Id$ + */ + +#ifndef _MATH_PRIVATE_H_ +#define _MATH_PRIVATE_H_ + +#include <endian.h> +#include <sys/types.h> +#include <machine/weakalias.h> +#include <machine/huge_val.h> + +#define INFINITY HUGE_VALF + +#define __nan(x) nan() +#define __isnan isnan +#define __isinf isinf +#define __copysignf copysignf +#define __copysign copysign +#define __isnanf isnanf +#define __isinff isinff +#define __nanf(x) nanf() +#define feraiseexcept(x) /* nothing */ +#define __sincos sincos +#define __sincosf sincosf + +int __signbitd (double x); +int __signbitf (float x); + +/* 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 + +typedef union +{ + double value; + struct + { + u_int32_t msw; + u_int32_t lsw; + } parts; +} ieee_double_shape_type; + +#endif + +#if __FLOAT_WORD_ORDER == LITTLE_ENDIAN + +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) + +/* A union which permits us to convert between a float and a 32 bit + int. */ + +typedef union +{ + float value; + u_int32_t word; +} ieee_float_shape_type; + +/* Get a 32 bit int from a float. */ + +#define GET_FLOAT_WORD(i,d) \ +do { \ + ieee_float_shape_type gf_u; \ + gf_u.value = (d); \ + (i) = gf_u.word; \ +} while (0) + +/* Set a float from a 32 bit int. */ + +#define SET_FLOAT_WORD(d,i) \ +do { \ + ieee_float_shape_type sf_u; \ + sf_u.word = (i); \ + (d) = sf_u.value; \ +} while (0) + +#if 0 +/* ieee style elementary functions */ +extern double __ieee754_sqrt (double); +extern double __ieee754_acos (double); +extern double __ieee754_acosh (double); +extern double __ieee754_log (double); +extern double __ieee754_atanh (double); +extern double __ieee754_asin (double); +extern double __ieee754_atan2 (double,double); +extern double __ieee754_exp (double); +extern double __ieee754_exp2 (double); +extern double __ieee754_exp10 (double); +extern double __ieee754_cosh (double); +extern double __ieee754_fmod (double,double); +extern double __ieee754_pow (double,double); +extern double __ieee754_lgamma_r (double,int *); +extern double __ieee754_gamma_r (double,int *); +extern double __ieee754_lgamma (double); +extern double __ieee754_gamma (double); +extern double __ieee754_log10 (double); +extern double __ieee754_log2 (double); +extern double __ieee754_sinh (double); +extern double __ieee754_hypot (double,double); +extern double __ieee754_j0 (double); +extern double __ieee754_j1 (double); +extern double __ieee754_y0 (double); +extern double __ieee754_y1 (double); +extern double __ieee754_jn (int,double); +extern double __ieee754_yn (int,double); +extern double __ieee754_remainder (double,double); +extern int32_t __ieee754_rem_pio2 (double,double*); +extern double __ieee754_scalb (double,double); +#endif + +#define __ieee754_sinh sinh +#define __ieee754_hypot hypot +#define __ieee754_hypotf hypotf +#define __ieee754_logf logf +#define __ieee754_log10 log10 +#define __ieee754_exp exp +#define __ieee754_cosh cosh +#define __ieee754_expf expf +#define __ieee754_log10f log10f +#define __ieee754_atan2 atan2 +#define __ieee754_sqrtf sqrtf +#define __ieee754_sinhf sinhf +#define __ieee754_log log +#define __ieee754_sqrt sqrt +#define __ieee754_coshf coshf +#define __ieee754_atan2f atan2f + +/* fdlibm kernel function */ +extern double __kernel_standard (double,double,int); +extern double __kernel_sin (double,double,int); +extern double __kernel_cos (double,double); +extern double __kernel_tan (double,double,int); +extern int __kernel_rem_pio2 (double*,double*,int,int,int, const int32_t*); + +/* internal functions. */ +extern double __copysign (double x, double __y); + + +/* ieee style elementary float functions */ +extern float __ieee754_sqrtf (float); +extern float __ieee754_acosf (float); +extern float __ieee754_acoshf (float); +extern float __ieee754_logf (float); +extern float __ieee754_atanhf (float); +extern float __ieee754_asinf (float); +extern float __ieee754_atan2f (float,float); +extern float __ieee754_expf (float); +extern float __ieee754_exp2f (float); +extern float __ieee754_exp10f (float); +extern float __ieee754_coshf (float); +extern float __ieee754_fmodf (float,float); +extern float __ieee754_powf (float,float); +extern float __ieee754_lgammaf_r (float,int *); +extern float __ieee754_gammaf_r (float,int *); +extern float __ieee754_lgammaf (float); +extern float __ieee754_gammaf (float); +extern float __ieee754_log10f (float); +extern float __ieee754_log2f (float); +extern float __ieee754_sinhf (float); +extern float __ieee754_hypotf (float,float); +extern float __ieee754_j0f (float); +extern float __ieee754_j1f (float); +extern float __ieee754_y0f (float); +extern float __ieee754_y1f (float); +extern float __ieee754_jnf (int,float); +extern float __ieee754_ynf (int,float); +extern float __ieee754_remainderf (float,float); +extern int32_t __ieee754_rem_pio2f (float,float*); +extern float __ieee754_scalbf (float,float); + + +/* float versions of fdlibm kernel functions */ +extern float __kernel_sinf (float,float,int); +extern float __kernel_cosf (float,float); +extern float __kernel_tanf (float,float,int); +extern int __kernel_rem_pio2f (float*,float*,int,int,int, const int32_t*); + + +/* ieee style elementary long double functions */ +extern long double __ieee754_sqrtl (long double); +extern long double __ieee754_acosl (long double); +extern long double __ieee754_acoshl (long double); +extern long double __ieee754_logl (long double); +extern long double __ieee754_atanhl (long double); +extern long double __ieee754_asinl (long double); +extern long double __ieee754_atan2l (long double,long double); +extern long double __ieee754_expl (long double); +extern long double __ieee754_exp2l (long double); +extern long double __ieee754_exp10l (long double); +extern long double __ieee754_coshl (long double); +extern long double __ieee754_fmodl (long double,long double); +extern long double __ieee754_powl (long double,long double); +extern long double __ieee754_lgammal_r (long double,int *); +extern long double __ieee754_gammal_r (long double,int *); +extern long double __ieee754_lgammal (long double); +extern long double __ieee754_gammal (long double); +extern long double __ieee754_log10l (long double); +extern long double __ieee754_log2l (long double); +extern long double __ieee754_sinhl (long double); +extern long double __ieee754_hypotl (long double,long double); +extern long double __ieee754_j0l (long double); +extern long double __ieee754_j1l (long double); +extern long double __ieee754_y0l (long double); +extern long double __ieee754_y1l (long double); +extern long double __ieee754_jnl (int,long double); +extern long double __ieee754_ynl (int,long double); +extern long double __ieee754_remainderl (long double,long double); +extern int __ieee754_rem_pio2l (long double,long double*); +extern long double __ieee754_scalbl (long double,long double); + +/* long double versions of fdlibm kernel functions */ +extern long double __kernel_sinl (long double,long double,int); +extern long double __kernel_cosl (long double,long double); +extern long double __kernel_tanl (long double,long double,int); +extern void __kernel_sincosl (long double,long double, + long double *,long double *, int); +extern int __kernel_rem_pio2l (long double*,long double*,int,int, + int,const int*); + +#ifndef NO_LONG_DOUBLE +/* prototypes required to compile the ldbl-96 support without warnings */ +extern int __finitel (long double); +extern int __ilogbl (long double); +extern int __isinfl (long double); +extern int __isnanl (long double); +extern long double __atanl (long double); +extern long double __copysignl (long double, long double); +extern long double __expm1l (long double); +extern long double __floorl (long double); +extern long double __frexpl (long double, int *); +extern long double __ldexpl (long double, int); +extern long double __log1pl (long double); +extern long double __nanl (const char *); +extern long double __rintl (long double); +extern long double __scalbnl (long double, int); +extern long double __sqrtl (long double x); +extern long double fabsl (long double x); +extern void __sincosl (long double, long double *, long double *); +extern long double __logbl (long double x); +extern long double __significandl (long double x); +#endif + +/* Prototypes for functions of the IBM Accurate Mathematical Library. */ +extern double __exp1 (double __x, double __xx, double __error); +extern double __sin (double __x); +extern double __cos (double __x); +extern int __branred (double __x, double *__a, double *__aa); +extern void __doasin (double __x, double __dx, double __v[]); +extern void __dubsin (double __x, double __dx, double __v[]); +extern void __dubcos (double __x, double __dx, double __v[]); +extern double __halfulp (double __x, double __y); +extern double __sin32 (double __x, double __res, double __res1); +extern double __cos32 (double __x, double __res, double __res1); +extern double __mpsin (double __x, double __dx); +extern double __mpcos (double __x, double __dx); +extern double __mpsin1 (double __x); +extern double __mpcos1 (double __x); +extern double __slowexp (double __x); +extern double __slowpow (double __x, double __y, double __z); +extern void __docos (double __x, double __dx, double __v[]); + +#endif /* _MATH_PRIVATE_H_ */ |