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ldbl-128ibm: simplify iscanonical.h

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The test for enabling _Float128 or IEEE 128 long double can be
greatly simplified knowing that there is no ibm128, thus we require
no special cases, and everything is canonical.

This reverts the changes to ldbl-128ibm iscanonical.h from commit
8dbfea3a20 and extends the check
for __NO_LONG_DOUBLE_MATH to include a check for float128 redirects
to long double.

Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
This commit is contained in:
Paul E. Murphy 2020-03-16 10:49:04 -05:00
parent f90a7e96df
commit bd98471eb2
1 changed files with 2 additions and 8 deletions
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10
sysdeps/ieee754/ldbl-128ibm/bits/iscanonical.h
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@ -20,15 +20,11 @@
# error "Never use <bits/iscanonical.h> directly; include <math.h> instead."
#endif
#ifdef __NO_LONG_DOUBLE_MATH
#if defined (__NO_LONG_DOUBLE_MATH) || __LONG_DOUBLE_USES_FLOAT128 == 1
# define iscanonical(x) ((void) (__typeof (x)) (x), 1)
#else
# if __LONG_DOUBLE_USES_FLOAT128 == 1
# define __iscanonicall(x) ((void) (__typeof (x)) (x), 1)
# else
extern int __iscanonicall (long double __x)
__THROW __attribute__ ((__const__));
# endif
# define __iscanonicalf(x) ((void) (__typeof (x)) (x), 1)
# define __iscanonical(x) ((void) (__typeof (x)) (x), 1)
# if __HAVE_DISTINCT_FLOAT128
@ -54,9 +50,7 @@ extern "C++" {
inline int iscanonical (float __val) { return __iscanonicalf (__val); }
inline int iscanonical (double __val) { return __iscanonical (__val); }
inline int iscanonical (long double __val) { return __iscanonicall (__val); }
/* When using an IEEE 128-bit long double, _Float128 is defined as long double
in C++. */
# if __HAVE_DISTINCT_FLOAT128 && __HAVE_FLOAT128_UNLIKE_LDBL
# if __HAVE_DISTINCT_FLOAT128
inline int iscanonical (_Float128 __val) { return __iscanonicalf128 (__val); }
# endif
}