1 /* origin: FreeBSD /usr/src/lib/msun/src/math_private.h */
3 * ====================================================
4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
6 * Developed at SunPro, a Sun Microsystems, Inc. business.
7 * Permission to use, copy, modify, and distribute this
8 * software is freely granted, provided that this notice
10 * ====================================================
36 #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
37 #elif LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384 && __BYTE_ORDER == __LITTLE_ENDIAN
45 #elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384 && __BYTE_ORDER == __LITTLE_ENDIAN
60 #error Unsupported long double representation
63 #define FORCE_EVAL(x) do { \
64 if (sizeof(x) == sizeof(float)) { \
67 } else if (sizeof(x) == sizeof(double)) { \
68 volatile double __x; \
71 volatile long double __x; \
76 /* Get two 32 bit ints from a double. */
77 #define EXTRACT_WORDS(hi,lo,d) \
81 (hi) = __u.bits >> 32; \
82 (lo) = (uint32_t)__u.bits; \
85 /* Get a 64 bit int from a double. */
86 #define EXTRACT_WORD64(i,d) \
93 /* Get the more significant 32 bit int from a double. */
94 #define GET_HIGH_WORD(i,d) \
98 (i) = __u.bits >> 32; \
101 /* Get the less significant 32 bit int from a double. */
102 #define GET_LOW_WORD(i,d) \
106 (i) = (uint32_t)__u.bits; \
109 /* Set a double from two 32 bit ints. */
110 #define INSERT_WORDS(d,hi,lo) \
113 __u.bits = ((uint64_t)(hi) << 32) | (uint32_t)(lo); \
117 /* Set a double from a 64 bit int. */
118 #define INSERT_WORD64(d,i) \
125 /* Set the more significant 32 bits of a double from an int. */
126 #define SET_HIGH_WORD(d,hi) \
130 __u.bits &= 0xffffffff; \
131 __u.bits |= (uint64_t)(hi) << 32; \
135 /* Set the less significant 32 bits of a double from an int. */
136 #define SET_LOW_WORD(d,lo) \
140 __u.bits &= 0xffffffff00000000ull; \
141 __u.bits |= (uint32_t)(lo); \
145 /* Get a 32 bit int from a float. */
146 #define GET_FLOAT_WORD(i,d) \
153 /* Set a float from a 32 bit int. */
154 #define SET_FLOAT_WORD(d,i) \
161 /* fdlibm kernel functions */
163 int __rem_pio2_large(double*,double*,int,int,int);
165 int __rem_pio2(double,double*);
166 double __sin(double,double,int);
167 double __cos(double,double);
168 double __tan(double,double,int);
169 double __expo2(double);
170 double complex __ldexp_cexp(double complex,int);
172 int __rem_pio2f(float,double*);
173 float __sindf(double);
174 float __cosdf(double);
175 float __tandf(double,int);
176 float __expo2f(float);
177 float complex __ldexp_cexpf(float complex,int);
179 int __rem_pio2l(long double, long double *);
180 long double __sinl(long double, long double, int);
181 long double __cosl(long double, long double);
182 long double __tanl(long double, long double, int);
184 /* polynomial evaluation */
185 long double __polevll(long double, const long double *, int);
186 long double __p1evll(long double, const long double *, int);
189 /* Attempt to get strict C99 semantics for assignment with non-C99 compilers. */
190 #define STRICT_ASSIGN(type, lval, rval) do { \
191 volatile type __v = (rval); \
195 /* Should work with -fexcess-precision=standard (>=gcc-4.5) or -ffloat-store */
196 #define STRICT_ASSIGN(type, lval, rval) ((lval) = (type)(rval))