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