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author | Joseph Myers <joseph@codesourcery.com> | 2016-10-17 22:48:51 +0000 |
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committer | Joseph Myers <joseph@codesourcery.com> | 2016-10-17 22:48:51 +0000 |
commit | 6f322a894704e7959b9cee7c2cc7ec1963a26e73 (patch) | |
tree | 817009ca0ac99f5c874ae233f8c603d0b646e849 /sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c | |
parent | 8e36adc08eebb526d180b8477f1840c5bd549d83 (diff) | |
download | glibc-6f322a894704e7959b9cee7c2cc7ec1963a26e73.tar.gz glibc-6f322a894704e7959b9cee7c2cc7ec1963a26e73.tar.xz glibc-6f322a894704e7959b9cee7c2cc7ec1963a26e73.zip |
Define HIGH_ORDER_BIT_IS_SET_FOR_SNAN to 0 or 1.
This patch moves the HIGH_ORDER_BIT_IS_SET_FOR_SNAN macro from being defined or undefined to the preferred convention of always being defined, to either 0 or 1, so allowing typo-proof tests with #if. The macro is moved from math_private.h to a new header nan-high-order-bit.h to make it easy for all architectures to define, either through the sysdeps/generic version of the header or through providing their own version of the header, without needing #ifndef in the generic math_private.h to give a default definition. The move also allows the macro to be used without needing math_private.h to be included; the immediate motivation of this patch is to allow tests to access this information (to know what kinds of NaNs 0 is a valid payload for) without needing to include math_private.h. Existing C level rather than preprocessor conditionals at all, but this patch does not make such a change). Tested for x86_64 and x86 (testsuite); also verified for x86_64, x86, mips64 and powerpc that installed stripped shared libraries are unchanged by the patch. * sysdeps/generic/nan-high-order-bit.h: New file. * sysdeps/hppa/nan-high-order-bit.h: Likewise. * sysdeps/mips/nan-high-order-bit.h: Likewise. * sysdeps/hppa/math_private.h: Remove file. * sysdeps/mips/math_private.h (HIGH_ORDER_BIT_IS_SET_FOR_SNAN): Do not define here. * sysdeps/ieee754/dbl-64/s_issignaling.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/dbl-64/s_totalorder.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/dbl-64/s_totalordermag.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/dbl-64/wordsize-64/s_issignaling.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/dbl-64/wordsize-64/s_totalorder.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/flt-32/s_issignalingf.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/flt-32/s_totalorderf.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/flt-32/s_totalordermagf.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-128/s_issignalingl.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-128/s_totalorderl.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-128/s_totalordermagl.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-128ibm/s_issignalingl.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-128ibm/s_totalorderl.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-128ibm/s_totalordermagl.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-96/s_issignalingl.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-96/s_totalorderl.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-96/s_totalordermagl.c: Include <nan-high-order-bit.h>. [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef.
Diffstat (limited to 'sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c')
-rw-r--r-- | sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c index 38f2e1ba8f..999a9196f3 100644 --- a/sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c +++ b/sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c @@ -18,6 +18,7 @@ #include <math.h> #include <math_private.h> +#include <nan-high-order-bit.h> #include <stdint.h> int @@ -28,7 +29,7 @@ totalordermag (double x, double y) EXTRACT_WORDS64 (iy, y); ix &= 0x7fffffffffffffffULL; iy &= 0x7fffffffffffffffULL; -#ifdef HIGH_ORDER_BIT_IS_SET_FOR_SNAN +#if HIGH_ORDER_BIT_IS_SET_FOR_SNAN /* For the preferred quiet NaN convention, this operation is a comparison of the representations of the absolute values of the arguments. If both arguments are NaNs, invert the |