summaryrefslogtreecommitdiffstats
path: root/lib/msun/src/math.h
diff options
context:
space:
mode:
Diffstat (limited to 'lib/msun/src/math.h')
-rw-r--r--lib/msun/src/math.h342
1 files changed, 342 insertions, 0 deletions
diff --git a/lib/msun/src/math.h b/lib/msun/src/math.h
new file mode 100644
index 0000000..c8e426d
--- /dev/null
+++ b/lib/msun/src/math.h
@@ -0,0 +1,342 @@
+/*
+ * ====================================================
+ * 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
+ * $FreeBSD$
+ */
+
+#ifndef _MATH_H_
+#define _MATH_H_
+
+#include <sys/_types.h>
+
+/*
+ * ANSI/POSIX
+ */
+extern const union __infinity_un {
+ unsigned char __uc[8];
+ double __ud;
+} __infinity;
+
+extern const union __nan_un {
+ unsigned char __uc[sizeof(float)];
+ float __uf;
+} __nan;
+
+#define FP_ILOGB0 (-0x7fffffff - 1) /* INT_MIN */
+#define FP_ILOGBNAN 0x7fffffff /* INT_MAX */
+#define HUGE_VAL (__infinity.__ud)
+#define HUGE_VALF (float)HUGE_VAL
+#define HUGE_VALL (long double)HUGE_VAL
+#define INFINITY HUGE_VALF
+#define NAN (__nan.__uf)
+
+/* Symbolic constants to classify floating point numbers. */
+#define FP_INFINITE 0x01
+#define FP_NAN 0x02
+#define FP_NORMAL 0x04
+#define FP_SUBNORMAL 0x08
+#define FP_ZERO 0x10
+#define fpclassify(x) \
+ ((sizeof (x) == sizeof (float)) ? __fpclassifyf(x) \
+ : (sizeof (x) == sizeof (double)) ? __fpclassifyd(x) \
+ : __fpclassifyl(x))
+
+#define isfinite(x) ((fpclassify(x) & (FP_INFINITE|FP_NAN)) == 0)
+#define isinf(x) (fpclassify(x) == FP_INFINITE)
+#define isnan(x) (fpclassify(x) == FP_NAN)
+#define isnanf(x) isnan(x)
+#define isnormal(x) (fpclassify(x) == FP_NORMAL)
+
+#define isgreater(x, y) (!isunordered((x), (y)) && (x) > (y))
+#define isgreaterequal(x, y) (!isunordered((x), (y)) && (x) >= (y))
+#define isless(x, y) (!isunordered((x), (y)) && (x) < (y))
+#define islessequal(x, y) (!isunordered((x), (y)) && (x) <= (y))
+#define islessgreater(x, y) (!isunordered((x), (y)) && \
+ ((x) > (y) || (y) > (x)))
+#define isunordered(x, y) (isnan(x) || isnan(y))
+
+#define signbit(x) __signbit(x)
+
+typedef __double_t double_t;
+typedef __float_t float_t;
+
+/*
+ * XOPEN/SVID
+ */
+#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
+#define M_E 2.7182818284590452354 /* e */
+#define M_LOG2E 1.4426950408889634074 /* log 2e */
+#define M_LOG10E 0.43429448190325182765 /* log 10e */
+#define M_LN2 0.69314718055994530942 /* log e2 */
+#define M_LN10 2.30258509299404568402 /* log e10 */
+#define M_PI 3.14159265358979323846 /* pi */
+#define M_PI_2 1.57079632679489661923 /* pi/2 */
+#define M_PI_4 0.78539816339744830962 /* pi/4 */
+#define M_1_PI 0.31830988618379067154 /* 1/pi */
+#define M_2_PI 0.63661977236758134308 /* 2/pi */
+#define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
+#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
+#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
+
+#define MAXFLOAT ((float)3.40282346638528860e+38)
+extern int signgam;
+
+#if !defined(_XOPEN_SOURCE)
+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
+
+/* We have a problem when using C++ since `exception' is a reserved
+ name in C++. */
+#ifndef __cplusplus
+struct exception {
+ int type;
+ char *name;
+ double arg1;
+ double arg2;
+ double retval;
+};
+#endif
+
+#if 0
+/* Old value from 4.4BSD-Lite math.h; this is probably better. */
+#define HUGE HUGE_VAL
+#else
+#define HUGE MAXFLOAT
+#endif
+
+/*
+ * set X_TLOSS = pi*2**52, which is possibly defined in <values.h>
+ * (one may replace the following line by "#include <values.h>")
+ */
+
+#define X_TLOSS 1.41484755040568800000e+16
+
+#define DOMAIN 1
+#define SING 2
+#define OVERFLOW 3
+#define UNDERFLOW 4
+#define TLOSS 5
+#define PLOSS 6
+
+#endif /* !_XOPEN_SOURCE */
+#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
+
+#include <sys/cdefs.h>
+
+/*
+ * Most of these functions have the side effect of setting errno, so they
+ * are not declared as __pure2. (XXX: this point needs to be revisited,
+ * since C99 doesn't require the mistake of setting errno, and we mostly
+ * don't set it anyway. In C99, pragmas and functions for changing the
+ * rounding mode affect the purity of these functions.)
+ */
+__BEGIN_DECLS
+/*
+ * ANSI/POSIX
+ */
+int __fpclassifyd(double) __pure2;
+int __fpclassifyf(float) __pure2;
+int __fpclassifyl(long double) __pure2;
+int __signbit(double) __pure2;
+
+double acos(double);
+double asin(double);
+double atan(double);
+double atan2(double, double);
+double cos(double);
+double sin(double);
+double tan(double);
+
+double cosh(double);
+double sinh(double);
+double tanh(double);
+
+double exp(double);
+double frexp(double, int *); /* fundamentally !__pure2 */
+double ldexp(double, int);
+double log(double);
+double log10(double);
+double modf(double, double *); /* fundamentally !__pure2 */
+
+double pow(double, double);
+double sqrt(double);
+
+double ceil(double);
+double fabs(double);
+double floor(double);
+double fmod(double, double);
+
+/*
+ * These functions are not in C90 so they can be "right". The ones that
+ * never set errno in lib/msun are declared as __pure2.
+ */
+#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
+double erf(double);
+double erfc(double) __pure2;
+int finite(double) __pure2;
+double gamma(double);
+double hypot(double, double);
+double j0(double);
+double j1(double);
+double jn(int, double);
+double lgamma(double);
+double y0(double);
+double y1(double);
+double yn(int, double);
+
+#if !defined(_XOPEN_SOURCE)
+double acosh(double);
+double asinh(double);
+double atanh(double);
+double cbrt(double) __pure2;
+double logb(double) __pure2;
+double nextafter(double, double);
+double remainder(double, double);
+double scalb(double, double);
+double tgamma(double);
+
+#ifndef __cplusplus
+int matherr(struct exception *);
+#endif
+
+/*
+ * IEEE Test Vector
+ */
+double significand(double);
+
+/*
+ * Functions callable from C, intended to support IEEE arithmetic.
+ */
+double copysign(double, double) __pure2;
+int ilogb(double);
+double rint(double) __pure2;
+double scalbn(double, int);
+
+/*
+ * BSD math library entry points
+ */
+double drem(double, double);
+double expm1(double) __pure2;
+double log1p(double) __pure2;
+
+/*
+ * Reentrant version of gamma & lgamma; passes signgam back by reference
+ * as the second argument; user must allocate space for signgam.
+ */
+#if __BSD_VISIBLE
+double gamma_r(double, int *);
+double lgamma_r(double, int *);
+#endif /* __BSD_VISIBLE */
+
+/* float versions of ANSI/POSIX functions */
+float acosf(float);
+float asinf(float);
+float atanf(float);
+float atan2f(float, float);
+float cosf(float);
+float sinf(float);
+float tanf(float);
+
+float coshf(float);
+float sinhf(float);
+float tanhf(float);
+
+float expf(float);
+float frexpf(float, int *); /* fundamentally !__pure2 */
+float ldexpf(float, int);
+float logf(float);
+float log10f(float);
+float modff(float, float *); /* fundamentally !__pure2 */
+
+float powf(float, float);
+float sqrtf(float);
+
+float ceilf(float);
+float fabsf(float);
+float floorf(float);
+float fmodf(float, float);
+
+float erff(float);
+float erfcf(float) __pure2;
+int finitef(float) __pure2;
+float gammaf(float);
+float hypotf(float, float) __pure2;
+float j0f(float);
+float j1f(float);
+float jnf(int, float);
+float lgammaf(float);
+float y0f(float);
+float y1f(float);
+float ynf(int, float);
+
+float acoshf(float);
+float asinhf(float);
+float atanhf(float);
+float cbrtf(float) __pure2;
+float logbf(float) __pure2;
+float nextafterf(float, float);
+float remainderf(float, float);
+float scalbf(float, float);
+
+/*
+ * float version of IEEE Test Vector
+ */
+float significandf(float);
+
+/*
+ * Float versions of functions callable from C, intended to support
+ * IEEE arithmetic.
+ */
+float copysignf(float, float) __pure2;
+int ilogbf(float);
+float rintf(float);
+float scalbnf(float, int);
+
+/*
+ * float versions of BSD math library entry points
+ */
+float dremf(float, float);
+float expm1f(float) __pure2;
+float log1pf(float) __pure2;
+
+/*
+ * Float versions of reentrant version of gamma & lgamma; passes
+ * signgam back by reference as the second argument; user must
+ * allocate space for signgam.
+ */
+#if __BSD_VISIBLE
+float gammaf_r(float, int *);
+float lgammaf_r(float, int *);
+#endif /* __BSD_VISIBLE */
+
+#endif /* !_XOPEN_SOURCE */
+#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
+__END_DECLS
+
+#endif /* !_MATH_H_ */
OpenPOWER on IntegriCloud