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>
44 lines
819 B
C
44 lines
819 B
C
#ifndef _LOCAL_MATH_H_
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#define _LOCAL_MATH_H_
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/* This header is required to define the types used by some of the
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mingw-w64 based files in the math subdir. */
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typedef union __mingw_dbl_type_t {
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double x;
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unsigned long long val;
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struct {
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unsigned int low, high;
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} lh;
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} __mingw_dbl_type_t;
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typedef union __mingw_flt_type_t {
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float x;
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unsigned int val;
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} __mingw_flt_type_t;
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typedef union __mingw_ldbl_type_t
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{
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long double x;
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struct {
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unsigned int low, high;
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int sign_exponent : 16;
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int res1 : 16;
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int res0 : 32;
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} lh;
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} __mingw_ldbl_type_t;
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typedef union __mingw_fp_types_t
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{
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long double *ld;
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double *d;
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float *f;
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__mingw_ldbl_type_t *ldt;
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__mingw_dbl_type_t *dt;
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__mingw_flt_type_t *ft;
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} __mingw_fp_types_t;
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#include_next <math.h>
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#endif /* _LOCAL_MATH_H_ */
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