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Provide an additional macro expansion for F128 in stdlib/tst-strtod.h

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The macro F128 in stdlib/tst-strtod.h is defined to provide the literal
suffix for _Float128 constants.  It uses the macro __f128 (), which is
defined in bits/floatn.h to provide the correct literal suffix depending on
what is provided by the compiler.

However, F128 was not being expanded and only worked correctly, when
compiling with GCC 7 (or greater), since F128 is the literal suffix itself.
This patch adds an additional macro expansion so that the macro F128
expands to the correct literal suffix on older compilers.

	* stdlib/tst-strtod.h (MMFUNC): New macro to provide an addition
	macro expansion.
	(GEN_TEST_STRTOD_FOREACH): Use MMFUNC for _Float128.
This commit is contained in:
Gabriel F. T. Gomes 2017-06-21 09:20:39 -03:00
parent 95b38bbb03
commit 5ae2266943
2 changed files with 11 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2017-06-22 Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com>
* stdlib/tst-strtod.h (MMFUNC): New macro to provide an addition
macro expansion.
(GEN_TEST_STRTOD_FOREACH): Use MMFUNC for _Float128.
2017-06-22 Mike FABIAN <mfabian@redhat.com>
[BZ #21533]

6
stdlib/tst-strtod.h
View file

@ -33,12 +33,16 @@
# define IF_FLOAT128(x)
#endif
/* Provide an extra parameter expansion for mfunc. */
#define MMFUNC(mmfunc, ...) mmfunc (__VA_ARGS__)
/* Splat n variants of the same test for the various strtod functions. */
#define GEN_TEST_STRTOD_FOREACH(mfunc, ...) \
mfunc ( f, float, strfromf, f, f, ##__VA_ARGS__) \
mfunc ( d, double, strfromd, , , ##__VA_ARGS__) \
mfunc ( ld, long double, strfroml, L, l, ##__VA_ARGS__) \
IF_FLOAT128 (mfunc (f128, _Float128, strfromf128, F128, f128, ##__VA_ARGS__))
IF_FLOAT128 (MMFUNC \
(mfunc, f128, _Float128, strfromf128, F128, f128, ##__VA_ARGS__))
/* The arguments to the generated macros are:
FSUF - Function suffix
FTYPE - float type