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authorJoseph Myers <joseph@codesourcery.com>2016-11-10 21:41:56 +0000
committerJoseph Myers <joseph@codesourcery.com>2016-11-10 21:41:56 +0000
commitb4e75104b432e86dc8e308e8f58391bee6b33d78 (patch)
treef455315a1673abfb980439d8152280e81825e561 /sysdeps/generic
parent0a557c105cad94758543e18b4834c15da2c39eb8 (diff)
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Refactor some libm type-generic macros.
This patch refactors some type-generic libm macros, in both math.h and
math_private.h, to be based on a common __MATH_TG macro rather than
all replicating similar logic to choose a function to call based on
the type of the argument.

This should serve to illustrate what I think float128 support for such
macros should look like: common macros such as __MATH_TG may need
different definitions depending on whether float128 is supported in
glibc, so that the individual macros themselves do not need
conditionals on float128 support.

Tested for x86_64, x86, mips64 and powerpc.

	* math/math.h (__MATH_TG): New macro.
	[__USE_ISOC99] (fpclassify): Define using __MATH_TG.
	[__USE_ISOC99] (signbit): Likewise.
	[__USE_ISOC99] (isfinite): Likewise.
	[__USE_ISOC99] (isnan): Likewise.
	[__USE_ISOC99] (isinf): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (issignaling): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (__MATH_EVAL_FMT2): New macro.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (iseqsig): Define using
	__MATH_TG and __MATH_EVAL_FMT2.
	* sysdeps/generic/math_private.h (fabs_tg): Define using
	__MATH_TG.
	* sysdeps/ieee754/ldbl-128ibm/bits/iscanonical.h
	[!__NO_LONG_DOUBLE_MATH] (__iscanonicalf): New macro.
	[!__NO_LONG_DOUBLE_MATH] (__iscanonical): Likewise.
	[!__NO_LONG_DOUBLE_MATH] (iscanonical): Define using __MATH_TG.
	* sysdeps/ieee754/ldbl-96/bits/iscanonical.h (__iscanonicalf): New
	macro.
	(__iscanonical): Likewise.
	(iscanonical): Define using __MATH_TG.
Diffstat (limited to 'sysdeps/generic')
-rw-r--r--sysdeps/generic/math_private.h7
1 files changed, 1 insertions, 6 deletions
diff --git a/sysdeps/generic/math_private.h b/sysdeps/generic/math_private.h
index 28e5df0a24..c0d4e3dbcd 100644
--- a/sysdeps/generic/math_private.h
+++ b/sysdeps/generic/math_private.h
@@ -427,12 +427,7 @@ extern long double __lgamma_productl (long double t, long double x,
    })
 #endif
 
-#define fabs_tg(x) __builtin_choose_expr			\
-  (__builtin_types_compatible_p (__typeof (x), float),		\
-   __builtin_fabsf (x),						\
-   __builtin_choose_expr					\
-   (__builtin_types_compatible_p (__typeof (x), double),	\
-    __builtin_fabs (x), __builtin_fabsl (x)))
+#define fabs_tg(x) __MATH_TG ((x), (__typeof (x)) __builtin_fabs, (x))
 #define min_of_type(type) __builtin_choose_expr		\
   (__builtin_types_compatible_p (type, float),		\
    FLT_MIN,						\