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163 lines
4.4 KiB
C
163 lines
4.4 KiB
C
/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#ifdef __GNUC__
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#include <sys/cdefs.h>
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#ifdef __NO_MATH_INLINES
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#define __m81_u(x) __CONCAT(__,x)
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#else
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#define __m81_u(x) x
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#define __MATH_INLINES 1
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#endif
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#define __inline_mathop2(func, op) \
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extern __inline __const double \
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__m81_u(func)(double __mathop_x) \
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{ \
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double __result; \
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__asm("f" __STRING(op) "%.x %1, %0" : "=f" (__result) : "f" (__mathop_x));\
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return __result; \
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}
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#define __inline_mathop(op) __inline_mathop2(op, op)
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__inline_mathop(acos)
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__inline_mathop(asin)
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__inline_mathop(atan)
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__inline_mathop(cos)
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__inline_mathop(sin)
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__inline_mathop(tan)
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__inline_mathop(cosh)
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__inline_mathop(sinh)
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__inline_mathop(tanh)
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__inline_mathop2(exp, etox)
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__inline_mathop2(fabs, abs)
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__inline_mathop(log10)
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__inline_mathop2(log, logn)
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__inline_mathop2(floor, intrz)
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__inline_mathop(sqrt)
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__inline_mathop2(__rint, int)
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#ifdef __USE_MISC
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__inline_mathop2(rint, int)
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__inline_mathop2(expm1, etoxm1)
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__inline_mathop2(log1p, lognp1)
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__inline_mathop(atanh)
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#endif
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extern __inline __const double
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__m81_u(__drem)(double __x, double __y)
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{
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double __result;
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__asm("frem%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x));
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return __result;
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}
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extern __inline __const double
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__m81_u(ldexp)(double __x, int __e)
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{
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double __result;
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double __double_e = (double) __e;
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__asm("fscale%.x %1, %0" : "=f" (__result) : "f" (__double_e), "0" (__x));
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return __result;
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}
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extern __inline __const double
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__m81_u(fmod)(double __x, double __y)
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{
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double __result;
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__asm("fmod%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x));
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return __result;
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}
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extern __inline double
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__m81_u(frexp)(double __value, int *__expptr)
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{
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double __mantissa, __exponent;
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__asm("fgetexp%.x %1, %0" : "=f" (__exponent) : "f" (__value));
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__asm("fgetman%.x %1, %0" : "=f" (__mantissa) : "f" (__value));
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*__expptr = (int) __exponent;
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return __mantissa;
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}
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extern __inline __const double
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__m81_u(pow)(double __x, double __y)
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{
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double __result;
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if (__y == 0.0 || __x == 1.0)
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__result = 1.0;
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else if (__y == 1.0)
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__result = __x;
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else if (__y == 2.0)
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__result = __x * __x;
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else if (__x == 10.0)
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__asm("ftentox%.x %1, %0" : "=f" (__result) : "f" (__y));
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else if (__x == 2.0)
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__asm("ftwotox%.x %1, %0" : "=f" (__result) : "f" (__y));
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else
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__result = __m81_u(exp)(__y * __m81_u(log)(__x));
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return __result;
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}
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extern __inline __const double
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__m81_u(ceil)(double __x)
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{
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double __result;
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unsigned long int __ctrl_reg;
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__asm("fmove%.l fpcr, %0" : "=g" (__ctrl_reg));
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/* Set rounding towards positive infinity. */
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__asm("fmove%.l %0, fpcr" : /* No outputs. */ : "g" (__ctrl_reg | 0x30));
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/* Convert X to an integer, using +Inf rounding. */
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__asm("fint%.x %1, %0" : "=f" (__result) : "f" (__x));
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/* Restore the previous rounding mode. */
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__asm("fmove%.l %0, fpcr" : /* No outputs. */ : "g" (__ctrl_reg));
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return __result;
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}
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extern __inline double
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__m81_u(modf)(double __value, double *__iptr)
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{
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double __modf_int = __m81_u(floor)(__value);
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*__iptr = __modf_int;
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return __value - __modf_int;
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}
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extern __inline int
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__m81_u(__isinf)(double __value)
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{
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/* There is no branch-condition for infinity,
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so we must extract and examine the condition codes manually. */
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unsigned long int __fpsr;
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__asm("ftst%.x %1\n"
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"fmove%.l fpsr, %0" : "=g" (__fpsr) : "f" (__value));
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return (__fpsr & (2 << (3 * 8))) ? (__value < 0 ? -1 : 1) : 0;
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}
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extern __inline int
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__m81_u(__isnan)(double __value)
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{
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char __result;
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__asm("ftst%.x %1\n"
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"fsun %0" : "=g" (__result) : "f" (__value));
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return __result;
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}
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#endif /* GCC. */
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