glibc/include/float.h
Gabriel F. T. Gomes 9f0170af26 Include libc-header-start.h in include/float.h
The file include/float.h uses the macro __GLIBC_USE to test for TS 18661-3
support.  Such macro is provided by bits/libc-header-start.h, so include it
to get the definition.

Tested for powerpc64le and s390x.

	* include/float.h: Include libc-header-start.h to get the
	definition of __GLIBC_USE.
2017-06-23 10:30:04 -03:00

34 lines
1.0 KiB
C

#ifndef _LIBC_FLOAT_H
#define _LIBC_FLOAT_H
#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
#include <bits/libc-header-start.h>
#ifndef _ISOMAC
# define __STDC_WANT_IEC_60559_TYPES_EXT__
#endif
#include_next <float.h>
/* Supplement float.h macros for _Float128 for older compilers
which do not yet support the type. These are described in
TS 18661-3. */
#include <features.h>
#include <bits/floatn.h>
#if !__GNUC_PREREQ (7, 0) \
&& __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)
# define FLT128_MANT_DIG 113
# define FLT128_DECIMAL_DIG 36
# define FLT128_DIG 33
# define FLT128_MIN_EXP (-16381)
# define FLT128_MIN_10_EXP (-4931)
# define FLT128_MAX_EXP 16384
# define FLT128_MAX_10_EXP 4932
# define FLT128_MAX 1.18973149535723176508575932662800702e+4932Q
# define FLT128_EPSILON 1.92592994438723585305597794258492732e-34Q
# define FLT128_MIN 3.36210314311209350626267781732175260e-4932Q
# define FLT128_TRUE_MIN 6.47517511943802511092443895822764655e-4966Q
#endif
#endif /* _LIBC_FLOAT_H */