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>
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/**
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* This file has no copyright assigned and is placed in the Public Domain.
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* This file is part of the mingw-w64 runtime package.
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* No warranty is given; refer to the file DISCLAIMER.PD within this package.
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*/
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void sincos (double __x, double *p_sin, double *p_cos);
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void sincosl (long double __x, long double *p_sin, long double *p_cos);
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void sincosf (float __x, float *p_sin, float *p_cos);
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void sincos (double __x, double *p_sin, double *p_cos)
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{
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long double c, s;
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__asm__ __volatile__ ("fsincos\n\t"
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"fnstsw %%ax\n\t"
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"testl $0x400, %%eax\n\t"
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"jz 1f\n\t"
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"fldpi\n\t"
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"fadd %%st(0)\n\t"
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"fxch %%st(1)\n\t"
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"2: fprem1\n\t"
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"fnstsw %%ax\n\t"
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"testl $0x400, %%eax\n\t"
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"jnz 2b\n\t"
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"fstp %%st(1)\n\t"
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"fsincos\n\t"
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"1:" : "=t" (c), "=u" (s) : "0" (__x));
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*p_sin = (double) s;
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*p_cos = (double) c;
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}
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void sincosf (float __x, float *p_sin, float *p_cos)
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{
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long double c, s;
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__asm__ __volatile__ ("fsincos\n\t"
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"fnstsw %%ax\n\t"
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"testl $0x400, %%eax\n\t"
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"jz 1f\n\t"
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"fldpi\n\t"
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"fadd %%st(0)\n\t"
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"fxch %%st(1)\n\t"
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"2: fprem1\n\t"
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"fnstsw %%ax\n\t"
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"testl $0x400, %%eax\n\t"
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"jnz 2b\n\t"
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"fstp %%st(1)\n\t"
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"fsincos\n\t"
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"1:" : "=t" (c), "=u" (s) : "0" (__x));
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*p_sin = (float) s;
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*p_cos = (float) c;
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}
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void sincosl (long double __x, long double *p_sin, long double *p_cos)
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{
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long double c, s;
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__asm__ __volatile__ ("fsincos\n\t"
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"fnstsw %%ax\n\t"
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"testl $0x400, %%eax\n\t"
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"jz 1f\n\t"
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"fldpi\n\t"
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"fadd %%st(0)\n\t"
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"fxch %%st(1)\n\t"
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"2: fprem1\n\t"
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"fnstsw %%ax\n\t"
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"testl $0x400, %%eax\n\t"
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"jnz 2b\n\t"
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"fstp %%st(1)\n\t"
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"fsincos\n\t"
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"1:" : "=t" (c), "=u" (s) : "0" (__x));
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*p_sin = s;
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*p_cos = c;
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}
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