792e51b721
This patch adds the long double functions missing in newlib to Cygwin.
Apart from some self-written additions (exp10l, finite{f,l}, isinf{f,l},
isnan{f,l}, pow10l) the files are taken from the Mingw-w64 math lib.
Minor changes were required, e.g. substitue _WIN64 with __x86_64__ and
fixing __FLT_RPT_DOMAIN/__FLT_RPT_ERANGE for Cygwin.
Cygwin:
* math: New subdir with math functions.
* Makefile.in (VPATH): Add math subdir.
(MATH_OFILES): List of object files collected from building files in
math subdir.
(DLL_OFILES): Add $(MATH_OFILES).
${CURDIR}/libm.a: Add $(MATH_OFILES) to build.
* common.din: Add new functions from math subdir.
* i686.din: Align to new math subdir. Remove functions now commonly
available.
* x86_64.din: Ditto.
* math.h: math.h wrapper to define mingw structs used in some files in
math subdir.
* include/cygwin/version.h: Bump API minor version.
newlib:
* libc/include/complex.h: Add prototypes for complex long double
functions. Only define for Cygwin.
* libc/include/math.h: Additionally enable prototypes of long double
functions for Cygwin. Add Cygwin-only prototypes for dreml, sincosl,
exp10l and pow10l. Explain why we don't add them to newlib.
* libc/include/tgmath.h: Enable long double handling on Cygwin.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
46 lines
867 B
C
46 lines
867 B
C
/**
|
|
* This file has no copyright assigned and is placed in the Public Domain.
|
|
* This file is part of the mingw-w64 runtime package.
|
|
* No warranty is given; refer to the file DISCLAIMER.PD within this package.
|
|
*/
|
|
#include "cephes_mconf.h"
|
|
|
|
#ifndef _SET_ERRNO
|
|
#define _SET_ERRNO(x)
|
|
#endif
|
|
|
|
long double coshl(long double x)
|
|
{
|
|
long double y;
|
|
int x_class = fpclassify (x);
|
|
if (x_class == FP_NAN)
|
|
{
|
|
errno = EDOM;
|
|
return x;
|
|
}
|
|
else if (x_class == FP_INFINITE)
|
|
{
|
|
errno = ERANGE;
|
|
return x;
|
|
}
|
|
x = fabsl (x);
|
|
if (x > (MAXLOGL + LOGE2L))
|
|
{
|
|
errno = ERANGE;
|
|
#ifdef INFINITIES
|
|
return (INFINITYL);
|
|
#else
|
|
return (MAXNUML);
|
|
#endif
|
|
}
|
|
if (x >= (MAXLOGL - LOGE2L))
|
|
{
|
|
y = expl(0.5L * x);
|
|
y = (0.5L * y) * y;
|
|
return y;
|
|
}
|
|
y = expl(x);
|
|
y = 0.5L * (y + 1.0L / y);
|
|
return y;
|
|
}
|