spogulis no
git://git.musl-libc.org/musl
synced 2025-01-18 23:45:02 +00:00
738c4e945c
float_t should represent the type that is used to evaluate float expressions internally. On s390x, float_t is currently set to double. In contrast, the isa supports single-precision float operations and compilers by default evaluate float in single precision, which violates the C standard (sections 5.2.4.2.2 and 7.12 in C11/C17, to be precise). With -fexcess-precision=standard, gcc evaluates float in double precision, which aligns with the standard yet at the cost of added conversion instructions. gcc-11 will drop the special case to retrofit double precision behavior for -fexcess-precision=standard so that __FLT_EVAL_METHOD__ will be 0 on s390x in any scenario. To improve standards compliance and compatibility with future compiler direction, this patch changes the definition of float_t to be derived from the compiler's __FLT_EVAL_METHOD__.
20 rindas
556 B
C
20 rindas
556 B
C
#ifdef __FLT_EVAL_METHOD__
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#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
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#else
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#define FLT_EVAL_METHOD 0
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#endif
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#define LDBL_TRUE_MIN 6.47517511943802511092443895822764655e-4966L
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#define LDBL_MIN 3.36210314311209350626267781732175260e-4932L
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#define LDBL_MAX 1.18973149535723176508575932662800702e+4932L
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#define LDBL_EPSILON 1.92592994438723585305597794258492732e-34L
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#define LDBL_MANT_DIG 113
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#define LDBL_MIN_EXP (-16381)
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#define LDBL_MAX_EXP 16384
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#define LDBL_DIG 33
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#define LDBL_MIN_10_EXP (-4931)
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#define LDBL_MAX_10_EXP 4932
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#define DECIMAL_DIG 36
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