mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-05-23 13:52:28 +00:00
Initial import
This commit is contained in:
Justine Tunney
commit
c91b3c5006
14915 changed files with 590219 additions and 0 deletions
238
libc/math/libm.h
Normal file
238
libc/math/libm.h
Normal file
|
|
@ -0,0 +1,238 @@
|
|||
#ifndef COSMOPOLITAN_LIBC_MATH_LIBM_H_
|
||||
#define COSMOPOLITAN_LIBC_MATH_LIBM_H_
|
||||
#if !(__ASSEMBLER__ + __LINKER__ + 0)
|
||||
COSMOPOLITAN_C_START_
|
||||
|
||||
#include "libc/math/math.h"
|
||||
|
||||
asm(".ident\t\"\\n\\n\
|
||||
libm (MIT License)\\n\
|
||||
Copyright 2017-2018 Arm Limited\\n\
|
||||
Copyright 2005-2019 Rich Felker\\n\
|
||||
Copyright 2008-2011, Bruce D. Evans, Steven G. Kargl, David Schultz\\n\
|
||||
Copyright 2008 Stephen L. Moshier <steve@moshier.net>\\n\
|
||||
Copyright 1993 Sun Microsystems\"");
|
||||
asm(".include \"libc/disclaimer.inc\"");
|
||||
|
||||
#define weak __attribute__((__weak__))
|
||||
#define hidden __attribute__((__visibility__("hidden")))
|
||||
#define weak_alias(old, new) \
|
||||
extern __typeof(old) new __attribute__((__weak__, __alias__(#old)))
|
||||
|
||||
#define __BYTE_ORDER __BYTE_ORDER__
|
||||
#define __LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
|
||||
|
||||
union ldshape {
|
||||
long double f;
|
||||
struct {
|
||||
uint64_t m;
|
||||
uint16_t se;
|
||||
} i;
|
||||
};
|
||||
|
||||
/* Support non-nearest rounding mode. */
|
||||
#define WANT_ROUNDING 1
|
||||
/* Support signaling NaNs. */
|
||||
#define WANT_SNAN 0
|
||||
|
||||
#if WANT_SNAN
|
||||
#error SNaN is unsupported
|
||||
#else
|
||||
#define issignalingf_inline(x) 0
|
||||
#define issignaling_inline(x) 0
|
||||
#endif
|
||||
|
||||
#ifndef TOINT_INTRINSICS
|
||||
#define TOINT_INTRINSICS 0
|
||||
#endif
|
||||
|
||||
/* Helps static branch prediction so hot path can be better optimized. */
|
||||
#define predict_true(x) __builtin_expect(!!(x), 1)
|
||||
#define predict_false(x) __builtin_expect(x, 0)
|
||||
|
||||
/* Evaluate an expression as the specified type. With standard excess
|
||||
precision handling a type cast or assignment is enough (with
|
||||
-ffloat-store an assignment is required, in old compilers argument
|
||||
passing and return statement may not drop excess precision). */
|
||||
|
||||
static inline float eval_as_float(float x) {
|
||||
float y = x;
|
||||
return y;
|
||||
}
|
||||
|
||||
static inline double eval_as_double(double x) {
|
||||
double y = x;
|
||||
return y;
|
||||
}
|
||||
|
||||
/* fp_barrier returns its input, but limits code transformations
|
||||
as if it had a side-effect (e.g. observable io) and returned
|
||||
an arbitrary value. */
|
||||
|
||||
#ifndef fp_barrierf
|
||||
#define fp_barrierf fp_barrierf
|
||||
static inline float fp_barrierf(float x) {
|
||||
volatile float y = x;
|
||||
return y;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef fp_barrier
|
||||
#define fp_barrier fp_barrier
|
||||
static inline double fp_barrier(double x) {
|
||||
volatile double y = x;
|
||||
return y;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef fp_barrierl
|
||||
#define fp_barrierl fp_barrierl
|
||||
static inline long double fp_barrierl(long double x) {
|
||||
volatile long double y = x;
|
||||
return y;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* fp_force_eval ensures that the input value is computed when that's
|
||||
otherwise unused. To prevent the constant folding of the input
|
||||
expression, an additional fp_barrier may be needed or a compilation
|
||||
mode that does so (e.g. -frounding-math in gcc). Then it can be
|
||||
used to evaluate an expression for its fenv side-effects only. */
|
||||
|
||||
#ifndef fp_force_evalf
|
||||
#define fp_force_evalf fp_force_evalf
|
||||
static inline void fp_force_evalf(float x) {
|
||||
volatile float y;
|
||||
y = x;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef fp_force_eval
|
||||
#define fp_force_eval fp_force_eval
|
||||
static inline void fp_force_eval(double x) {
|
||||
volatile double y;
|
||||
y = x;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef fp_force_evall
|
||||
#define fp_force_evall fp_force_evall
|
||||
static inline void fp_force_evall(long double x) {
|
||||
volatile long double y;
|
||||
y = x;
|
||||
}
|
||||
#endif
|
||||
|
||||
#define FORCE_EVAL(x) \
|
||||
do { \
|
||||
if (sizeof(x) == sizeof(float)) { \
|
||||
fp_force_evalf(x); \
|
||||
} else if (sizeof(x) == sizeof(double)) { \
|
||||
fp_force_eval(x); \
|
||||
} else { \
|
||||
fp_force_evall(x); \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
#define asuint(f) \
|
||||
((union { \
|
||||
float _f; \
|
||||
uint32_t _i; \
|
||||
}){f}) \
|
||||
._i
|
||||
#define asfloat(i) \
|
||||
((union { \
|
||||
uint32_t _i; \
|
||||
float _f; \
|
||||
}){i}) \
|
||||
._f
|
||||
#define asuint64(f) \
|
||||
((union { \
|
||||
double _f; \
|
||||
uint64_t _i; \
|
||||
}){f}) \
|
||||
._i
|
||||
#define asdouble(i) \
|
||||
((union { \
|
||||
uint64_t _i; \
|
||||
double _f; \
|
||||
}){i}) \
|
||||
._f
|
||||
|
||||
#define EXTRACT_WORDS(hi, lo, d) \
|
||||
do { \
|
||||
uint64_t __u = asuint64(d); \
|
||||
(hi) = __u >> 32; \
|
||||
(lo) = (uint32_t)__u; \
|
||||
} while (0)
|
||||
|
||||
#define GET_HIGH_WORD(hi, d) \
|
||||
do { \
|
||||
(hi) = asuint64(d) >> 32; \
|
||||
} while (0)
|
||||
|
||||
#define GET_LOW_WORD(lo, d) \
|
||||
do { \
|
||||
(lo) = (uint32_t)asuint64(d); \
|
||||
} while (0)
|
||||
|
||||
#define INSERT_WORDS(d, hi, lo) \
|
||||
do { \
|
||||
(d) = asdouble(((uint64_t)(hi) << 32) | (uint32_t)(lo)); \
|
||||
} while (0)
|
||||
|
||||
#define SET_HIGH_WORD(d, hi) INSERT_WORDS(d, hi, (uint32_t)asuint64(d))
|
||||
|
||||
#define SET_LOW_WORD(d, lo) INSERT_WORDS(d, asuint64(d) >> 32, lo)
|
||||
|
||||
#define GET_FLOAT_WORD(w, d) \
|
||||
do { \
|
||||
(w) = asuint(d); \
|
||||
} while (0)
|
||||
|
||||
#define SET_FLOAT_WORD(d, w) \
|
||||
do { \
|
||||
(d) = asfloat(w); \
|
||||
} while (0)
|
||||
|
||||
hidden int __rem_pio2_large(double *, double *, int, int, int);
|
||||
|
||||
hidden int __rem_pio2(double, double *);
|
||||
hidden double __sin(double, double, int);
|
||||
hidden double __cos(double, double);
|
||||
hidden double __tan(double, double, int);
|
||||
hidden double __expo2(double);
|
||||
|
||||
hidden int __rem_pio2f(float, double *);
|
||||
hidden float __sindf(double);
|
||||
hidden float __cosdf(double);
|
||||
hidden float __tandf(double, int);
|
||||
hidden float __expo2f(float);
|
||||
|
||||
hidden int __rem_pio2l(long double, long double *);
|
||||
hidden long double __sinl(long double, long double, int);
|
||||
hidden long double __cosl(long double, long double);
|
||||
hidden long double __tanl(long double, long double, int);
|
||||
|
||||
hidden long double __polevll(long double, const long double *, int);
|
||||
hidden long double __p1evll(long double, const long double *, int);
|
||||
|
||||
extern int __signgam;
|
||||
hidden double __lgamma_r(double, int *);
|
||||
hidden float __lgammaf_r(float, int *);
|
||||
|
||||
/* error handling functions */
|
||||
hidden float __math_xflowf(uint32_t, float);
|
||||
hidden float __math_uflowf(uint32_t);
|
||||
hidden float __math_oflowf(uint32_t);
|
||||
hidden float __math_divzerof(uint32_t);
|
||||
hidden float __math_invalidf(float);
|
||||
hidden double __math_xflow(uint32_t, double);
|
||||
hidden double __math_uflow(uint32_t);
|
||||
hidden double __math_oflow(uint32_t);
|
||||
hidden double __math_divzero(uint32_t);
|
||||
hidden double __math_invalid(double);
|
||||
|
||||
COSMOPOLITAN_C_END_
|
||||
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
|
||||
#endif /* COSMOPOLITAN_LIBC_MATH_LIBM_H_ */
|
||||
Loading…
Add table
Add a link
Reference in a new issue