From 6f322a894704e7959b9cee7c2cc7ec1963a26e73 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Mon, 17 Oct 2016 22:48:51 +0000 Subject: 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 . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/dbl-64/s_totalorder.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/dbl-64/s_totalordermag.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/dbl-64/wordsize-64/s_issignaling.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/dbl-64/wordsize-64/s_totalorder.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/flt-32/s_issignalingf.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/flt-32/s_totalorderf.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/flt-32/s_totalordermagf.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-128/s_issignalingl.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-128/s_totalorderl.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-128/s_totalordermagl.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-128ibm/s_issignalingl.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-128ibm/s_totalorderl.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-128ibm/s_totalordermagl.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-96/s_issignalingl.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-96/s_totalorderl.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. * sysdeps/ieee754/ldbl-96/s_totalordermagl.c: Include . [HIGH_ORDER_BIT_IS_SET_FOR_SNAN]: Test with #if not #ifdef. --- sysdeps/ieee754/ldbl-128ibm/s_issignalingl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'sysdeps/ieee754/ldbl-128ibm/s_issignalingl.c') diff --git a/sysdeps/ieee754/ldbl-128ibm/s_issignalingl.c b/sysdeps/ieee754/ldbl-128ibm/s_issignalingl.c index 0915139..94cfffcd 100644 --- a/sysdeps/ieee754/ldbl-128ibm/s_issignalingl.c +++ b/sysdeps/ieee754/ldbl-128ibm/s_issignalingl.c @@ -18,6 +18,7 @@ #include #include +#include int __issignalingl (long double x) @@ -29,7 +30,7 @@ __issignalingl (long double x) xhi = ldbl_high (x); EXTRACT_WORDS64 (xi, xhi); -#ifdef HIGH_ORDER_BIT_IS_SET_FOR_SNAN +#if HIGH_ORDER_BIT_IS_SET_FOR_SNAN # error untested /* We only have to care about the high-order bit of x's significand, because having it set (sNaN) already makes the significand different from that -- cgit v1.1