glibc/sysdeps/m68k/fpu/__math.h
Roland McGrath 6025c399e9 Sat Mar 16 20:08:22 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/alpha/memchr.S: new file.
	* sysdeps/alpha/memchr.c: obsolete file removed.

Sat Mar 16 16:26:09 1996  Roland McGrath  <roland@charlie-brown.gnu.ai.mit.edu>

	* misc/Makefile (headers): Add sysexits.h.
	* misc/sysexits.h: New file.

Thu Mar 14 15:20:45 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/libm-ieee754/e_atan2.c (__ieee754_atan2): Change atan
	call to __atan.
	* sysdeps/libm-ieee754/e_atan2f.c (__ieee754_atan2f): Change atanf
 	call to __atanf.

	* sysdeps/m68k/fpu/e_acos.c, sysdeps/m68k/fpu/e_acosf.c,
	sysdeps/m68k/fpu/e_asin.c, sysdeps/m68k/fpu/e_asinf.c,
	sysdeps/m68k/fpu/e_atanh.c, sysdeps/m68k/fpu/e_atanhf.c,
	sysdeps/m68k/fpu/e_cosh.c, sysdeps/m68k/fpu/e_coshf.c,
	sysdeps/m68k/fpu/e_exp.c, sysdeps/m68k/fpu/e_expf.c,
	sysdeps/m68k/fpu/e_fmod.c, sysdeps/m68k/fpu/e_fmodf.c,
	sysdeps/m68k/fpu/e_log.c, sysdeps/m68k/fpu/e_log10.c,
	sysdeps/m68k/fpu/e_log10f.c, sysdeps/m68k/fpu/e_logf.c,
	sysdeps/m68k/fpu/e_pow.c, sysdeps/m68k/fpu/e_powf.c,
	sysdeps/m68k/fpu/e_remainder.c, sysdeps/m68k/fpu/e_remainderf.c,
	sysdeps/m68k/fpu/e_scalb.c, sysdeps/m68k/fpu/e_scalbf.c,
	sysdeps/m68k/fpu/e_sinh.c, sysdeps/m68k/fpu/e_sinhf.c,
	sysdeps/m68k/fpu/e_sqrt.c, sysdeps/m68k/fpu/e_sqrtf.c,
	sysdeps/m68k/fpu/k_cos.c, sysdeps/m68k/fpu/k_cosf.c,
	sysdeps/m68k/fpu/k_sin.c, sysdeps/m68k/fpu/k_sinf.c,
	sysdeps/m68k/fpu/k_tan.c, sysdeps/m68k/fpu/k_tanf.c,
	sysdeps/m68k/fpu/s_atan.c, sysdeps/m68k/fpu/s_atanf.c,
	sysdeps/m68k/fpu/s_ceil.c, sysdeps/m68k/fpu/s_ceilf.c,
	sysdeps/m68k/fpu/s_cos.c, sysdeps/m68k/fpu/s_cosf.c,
	sysdeps/m68k/fpu/s_expm1.c, sysdeps/m68k/fpu/s_expm1f.c,
	sysdeps/m68k/fpu/s_fabs.c, sysdeps/m68k/fpu/s_fabsf.c,
	sysdeps/m68k/fpu/s_finite.c, sysdeps/m68k/fpu/s_finitef.c,
	sysdeps/m68k/fpu/s_floor.c, sysdeps/m68k/fpu/s_floorf.c,
	sysdeps/m68k/fpu/s_frexp.c, sysdeps/m68k/fpu/s_frexpf.c,
	sysdeps/m68k/fpu/s_ilogb.c, sysdeps/m68k/fpu/s_ilogbf.c,
	sysdeps/m68k/fpu/s_isinf.c, sysdeps/m68k/fpu/s_isinff.c,
	sysdeps/m68k/fpu/s_isnan.c, sysdeps/m68k/fpu/s_isnanf.c,
	sysdeps/m68k/fpu/s_ldexp.c, sysdeps/m68k/fpu/s_ldexpf.c,
	sysdeps/m68k/fpu/s_log1p.c, sysdeps/m68k/fpu/s_log1pf.c,
	sysdeps/m68k/fpu/s_logb.c, sysdeps/m68k/fpu/s_logbf.c,
	sysdeps/m68k/fpu/s_modf.c, sysdeps/m68k/fpu/s_modff.c,
	sysdeps/m68k/fpu/s_rint.c, sysdeps/m68k/fpu/s_rintf.c,
	sysdeps/m68k/fpu/s_scalbn.c, sysdeps/m68k/fpu/s_scalbnf.c,
	sysdeps/m68k/fpu/s_significand.c,
	sysdeps/m68k/fpu/s_significandf.c, sysdeps/m68k/fpu/s_sin.c,
	sysdeps/m68k/fpu/s_sinf.c, sysdeps/m68k/fpu/s_tan.c,
	sysdeps/m68k/fpu/s_tanf.c, sysdeps/m68k/fpu/s_tanh.c,
	sysdeps/m68k/fpu/s_tanhf.c: New files, for m68881 port of fdlibm.

	* sysdeps/m68k/fpu/__math.h: Rewritten for fdlibm.

	* sysdeps/m68k/fpu/isinfl.c: Rewritten to get argument type right.
	* sysdeps/m68k/fpu/isnanl.c: Likewise.

Thu Mar 14 06:01:07 1996  Roland McGrath  <roland@charlie-brown.gnu.ai.mit.edu>

	* posix/glob.c (glob): In GLOB_BRACE brace expansion, fix buffer size
	calculation to include trailing invariant portion.  Don't use alloca;
	instead use a dynamic auto array for GCC, malloc for non-GCC.
	Handle nested braces properly.

	* elf/elf.h (Elf32_auxv_t): Specify prototype (void) for `a_un.a_fcn'.

	* libc-symbols.h (lint): New macro.

Fri Mar 15 01:18:00 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libio/iosetvbuf.c: Add weak alias setvbuf.
1996-03-17 01:58:17 +00:00

449 lines
13 KiB
C

/* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#ifdef __GNUC__
#include <sys/cdefs.h>
#ifdef __NO_MATH_INLINES
/* This is used when defining the functions themselves. Define them with
__ names, and with `static inline' instead of `extern inline' so the
bodies will always be used, never an external function call. */
#define __m81_u(x) __CONCAT(__,x)
#define __m81_inline static __inline
#else
#define __m81_u(x) x
#define __m81_inline extern __inline
#define __MATH_INLINES 1
#endif
/* Define a const math function. */
#define __m81_defun(rettype, func, args) \
__m81_inline rettype \
__m81_u(func) args __attribute__((__const__)); \
__m81_inline rettype \
__m81_u(func) args
#define __inline_mathop(func, op) \
__m81_defun (double, func, (double __mathop_x)) \
{ \
double __result; \
__asm("f" __STRING(op) "%.x %1, %0" : "=f" (__result) : "f" (__mathop_x));\
return __result; \
}
#define __inline_mathopf(func, op) \
__m81_defun (float, func, (float __mathop_x)) \
{ \
float __result; \
__asm("f" __STRING(op) "%.x %1, %0" : "=f" (__result) : "f" (__mathop_x));\
return __result; \
}
/* ieee style elementary functions */
__inline_mathop(__ieee754_acos, acos)
__inline_mathop(__ieee754_asin, asin)
__inline_mathop(__ieee754_cosh, cosh)
__inline_mathop(__ieee754_sinh, sinh)
__inline_mathop(__ieee754_exp, etox)
__inline_mathop(__ieee754_log10, log10)
__inline_mathop(__ieee754_log, logn)
__inline_mathop(__ieee754_sqrt, sqrt)
__inline_mathop(__ieee754_atanh, atanh)
/* ieee style elementary float functions */
__inline_mathopf(__ieee754_acosf, acos)
__inline_mathopf(__ieee754_asinf, asin)
__inline_mathopf(__ieee754_coshf, cosh)
__inline_mathopf(__ieee754_sinhf, sinh)
__inline_mathopf(__ieee754_expf, etox)
__inline_mathopf(__ieee754_log10f, log10)
__inline_mathopf(__ieee754_logf, logn)
__inline_mathopf(__ieee754_sqrtf, sqrt)
__inline_mathopf(__ieee754_atanhf, atan)
__inline_mathop(__atan, atan)
__inline_mathop(__cos, cos)
__inline_mathop(__sin, sin)
__inline_mathop(__tan, tan)
__inline_mathop(__tanh, tanh)
__inline_mathop(__fabs, abs)
__inline_mathop(__sqrt, sqrt)
__inline_mathop(__rint, int)
__inline_mathop(__expm1, etoxm1)
__inline_mathop(__log1p, lognp1)
__inline_mathop(__logb, log2)
__inline_mathop(__significand, getman)
__inline_mathopf(__atanf, atan)
__inline_mathopf(__cosf, cos)
__inline_mathopf(__sinf, sin)
__inline_mathopf(__tanf, tan)
__inline_mathopf(__tanhf, tanh)
__inline_mathopf(__fabsf, abs)
__inline_mathopf(__sqrtf, sqrt)
__inline_mathopf(__rintf, int)
__inline_mathopf(__expm1f, etoxm1)
__inline_mathopf(__log1pf, lognp1)
__inline_mathopf(__logbf, log2)
__inline_mathopf(__significandf, getman)
__m81_defun (double, __ieee754_remainder, (double __x, double __y))
{
double __result;
__asm("frem%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x));
return __result;
}
__m81_defun (double, __ldexp, (double __x, int __e))
{
double __result;
double __double_e = (double) __e;
__asm("fscale%.x %1, %0" : "=f" (__result) : "f" (__double_e), "0" (__x));
return __result;
}
__m81_defun (double, __ieee754_fmod, (double __x, double __y))
{
double __result;
__asm("fmod%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x));
return __result;
}
__m81_inline double
__m81_u(__frexp)(double __value, int *__expptr)
{
double __mantissa, __exponent;
__asm("fgetexp%.x %1, %0" : "=f" (__exponent) : "f" (__value));
__asm("fgetman%.x %1, %0" : "=f" (__mantissa) : "f" (__value));
*__expptr = (int) __exponent;
return __mantissa;
}
__m81_defun (double, __floor, (double __x))
{
double __result;
unsigned long int __ctrl_reg;
__asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg));
/* Set rounding towards negative infinity. */
__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */
: "dmi" ((__ctrl_reg & ~0x10) | 0x20));
/* Convert X to an integer, using -Inf rounding. */
__asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__x));
/* Restore the previous rounding mode. */
__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */
: "dmi" (__ctrl_reg));
return __result;
}
__m81_defun (double, __ieee754_pow, (double __x, double __y))
{
double __result;
if (__x == 0.0)
{
if (__y <= 0.0)
__result = 0.0 / 0.0;
else
__result = 0.0;
}
else if (__y == 0.0 || __x == 1.0)
__result = 1.0;
else if (__y == 1.0)
__result = __x;
else if (__y == 2.0)
__result = __x * __x;
else if (__x == 10.0)
__asm("ftentox%.x %1, %0" : "=f" (__result) : "f" (__y));
else if (__x == 2.0)
__asm("ftwotox%.x %1, %0" : "=f" (__result) : "f" (__y));
else if (__x < 0.0)
{
double __temp = __m81_u (__rint) (__y);
if (__y == __temp)
{
int i = (int) __y;
__result = __m81_u(__ieee754_exp)(__y * __m81_u(__ieee754_log)(-__x));
if (i & 1)
__result = -__result;
}
else
__result = 0.0 / 0.0;
}
else
__result = __m81_u(__ieee754_exp)(__y * __m81_u(__ieee754_log)(__x));
return __result;
}
__m81_defun (double, __ceil, (double __x))
{
double __result;
unsigned long int __ctrl_reg;
__asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg));
/* Set rounding towards positive infinity. */
__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */
: "dmi" (__ctrl_reg | 0x30));
/* Convert X to an integer, using +Inf rounding. */
__asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__x));
/* Restore the previous rounding mode. */
__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */
: "dmi" (__ctrl_reg));
return __result;
}
__m81_inline double
__m81_u(__modf)(double __value, double *__iptr)
{
double __modf_int;
__asm ("fintrz%.x %1, %0" : "=f" (__modf_int) : "f" (__value));
*__iptr = __modf_int;
return __value - __modf_int;
}
__m81_defun (int, __isinf, (double __value))
{
/* There is no branch-condition for infinity,
so we must extract and examine the condition codes manually. */
unsigned long int __fpsr;
__asm("ftst%.x %1\n"
"fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value));
return (__fpsr & (2 << 24)) ? (__fpsr & (8 << 24) ? -1 : 1) : 0;
}
__m81_defun (int, __isnan, (double __value))
{
char __result;
__asm("ftst%.x %1\n"
"fsun %0" : "=dm" (__result) : "f" (__value));
return __result;
}
__m81_defun (int, __finite, (double __value))
{
/* There is no branch-condition for infinity, so we must extract and
examine the condition codes manually. */
unsigned long int __fpsr;
__asm ("ftst%.x %1\n"
"fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value));
return (__fpsr & (3 << 24)) == 0;
}
__m81_defun (int, __ilogb, (double __x))
{
double __result;
__asm("fgetexp%.x %1, %0" : "=f" (__result) : "f" (__x));
return (int) __result;
}
__m81_defun (double, __ieee754_scalb, (double __x, double __n))
{
double __result;
__asm ("fscale%.x %1, %0" : "=f" (__result) : "f" (__n), "0" (__x));
return __result;
}
__m81_defun (double, __scalbn, (double __x, int __n))
{
double __result;
double __double_n = (double) __n;
__asm ("fscale%.x %1, %0" : "=f" (__result) : "f" (__double_n), "0" (__x));
return __result;
}
__m81_defun (float, __ieee754_remainderf, (float __x, float __y))
{
float __result;
__asm("frem%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x));
return __result;
}
__m81_defun (float, __ldexpf, (float __x, int __e))
{
float __result;
float __float_e = (float) __e;
__asm("fscale%.x %1, %0" : "=f" (__result) : "f" (__float_e), "0" (__x));
return __result;
}
__m81_defun (float, __ieee754_fmodf, (float __x, float __y))
{
float __result;
__asm("fmod%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x));
return __result;
}
__m81_inline float
__m81_u(__frexpf)(float __value, int *__expptr)
{
float __mantissa, __exponent;
__asm("fgetexp%.x %1, %0" : "=f" (__exponent) : "f" (__value));
__asm("fgetman%.x %1, %0" : "=f" (__mantissa) : "f" (__value));
*__expptr = (int) __exponent;
return __mantissa;
}
__m81_defun (float, __floorf, (float __x))
{
float __result;
unsigned long int __ctrl_reg;
__asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg));
/* Set rounding towards negative infinity. */
__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */
: "dmi" ((__ctrl_reg & ~0x10) | 0x20));
/* Convert X to an integer, using -Inf rounding. */
__asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__x));
/* Restore the previous rounding mode. */
__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */
: "dmi" (__ctrl_reg));
return __result;
}
__m81_defun (float, __ieee754_powf, (float __x, float __y))
{
float __result;
if (__x == 0.0f)
{
if (__y <= 0.0f)
__result = 0.0f / 0.0f;
else
__result = 0.0f;
}
else if (__y == 0.0f || __x == 1.0f)
__result = 1.0;
else if (__y == 1.0f)
__result = __x;
else if (__y == 2.0f)
__result = __x * __x;
else if (__x == 10.0f)
__asm("ftentox%.x %1, %0" : "=f" (__result) : "f" (__y));
else if (__x == 2.0f)
__asm("ftwotox%.x %1, %0" : "=f" (__result) : "f" (__y));
else if (__x < 0.0f)
{
float __temp = __m81_u(__rintf)(__y);
if (__y == __temp)
{
int i = (int) __y;
__result = __m81_u(__ieee754_expf)(__y * __m81_u(__ieee754_logf)(-__x));
if (i & 1)
__result = -__result;
}
else
__result = 0.0f / 0.0f;
}
else
__result = __m81_u(__ieee754_expf)(__y * __m81_u(__ieee754_logf)(__x));
return __result;
}
__m81_defun (float, __ceilf, (float __x))
{
float __result;
unsigned long int __ctrl_reg;
__asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg));
/* Set rounding towards positive infinity. */
__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */
: "dmi" (__ctrl_reg | 0x30));
/* Convert X to an integer, using +Inf rounding. */
__asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__x));
/* Restore the previous rounding mode. */
__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */
: "dmi" (__ctrl_reg));
return __result;
}
__m81_inline float
__m81_u(__modff)(float __value, float *__iptr)
{
float __modf_int;
__asm ("fintrz%.x %1, %0" : "=f" (__modf_int) : "f" (__value));
*__iptr = __modf_int;
return __value - __modf_int;
}
__m81_defun (int, __isinff, (float __value))
{
/* There is no branch-condition for infinity,
so we must extract and examine the condition codes manually. */
unsigned long int __fpsr;
__asm("ftst%.x %1\n"
"fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value));
return (__fpsr & (2 << 24)) ? (__fpsr & (8 << 24) ? -1 : 1) : 0;
}
__m81_defun (int, __isnanf, (float __value))
{
char __result;
__asm("ftst%.x %1\n"
"fsun %0" : "=dm" (__result) : "f" (__value));
return __result;
}
__m81_defun (int, __finitef, (float __value))
{
/* There is no branch-condition for infinity, so we must extract and
examine the condition codes manually. */
unsigned long int __fpsr;
__asm ("ftst%.x %1\n"
"fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value));
return (__fpsr & (3 << 24)) == 0;
}
__m81_defun (int, __ilogbf, (float __x))
{
float __result;
__asm("fgetexp%.x %1, %0" : "=f" (__result) : "f" (__x));
return (int) __result;
}
__m81_defun (float, __ieee754_scalbf, (float __x, float __n))
{
float __result;
__asm ("fscale%.x %1, %0" : "=f" (__result) : "f" (__n), "0" (__x));
return __result;
}
__m81_defun (float, __scalbnf, (float __x, int __n))
{
float __result;
float __float_n = (float) __n;
__asm ("fscale%.x %1, %0" : "=f" (__result) : "f" (__float_n), "0" (__x));
return __result;
}
__m81_defun (int, __isinfl, (long double __value))
{
/* There is no branch-condition for infinity,
so we must extract and examine the condition codes manually. */
unsigned long int __fpsr;
__asm("ftst%.x %1\n"
"fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value));
return (__fpsr & (2 << 24)) ? (__fpsr & (8 << 24) ? -1 : 1) : 0;
}
__m81_defun (int, __isnanl, (long double __value))
{
char __result;
__asm("ftst%.x %1\n"
"fsun %0" : "=dm" (__result) : "f" (__value));
return __result;
}
#endif /* GCC. */