diff options
| author | Thiago Macieira <thiago.macieira@intel.com> | 2015-07-01 14:38:22 -0700 |
|---|---|---|
| committer | Thiago Macieira <thiago.macieira@intel.com> | 2015-10-16 04:02:24 +0000 |
| commit | 6f298be07681f4038ddd5694d259ef64a574ac6f (patch) | |
| tree | 73c195ab1a7fea67627d63ecc76f8fa4ee43f929 /src/corelib/global/qnumeric_p.h | |
| parent | 3d52b05a6356fdca1208fe1e77e431cf4b7c79c5 (diff) | |
Add the QT_HAS_xxx macros for post-C++11 feature testing
And for compiler extensions. QT_HAS_BUILTIN and QT_HAS_ATTRIBUTE will
come in handy.
Change-Id: I255870833a024a36adf6ffff13ecf06624bfc1ef
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Diffstat (limited to 'src/corelib/global/qnumeric_p.h')
| -rw-r--r-- | src/corelib/global/qnumeric_p.h | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/src/corelib/global/qnumeric_p.h b/src/corelib/global/qnumeric_p.h index e5f9d8e13e..7b048f6c1f 100644 --- a/src/corelib/global/qnumeric_p.h +++ b/src/corelib/global/qnumeric_p.h @@ -56,10 +56,6 @@ # include <immintrin.h> // for _addcarry_u<nn> #endif -#ifndef __has_builtin -# define __has_builtin(x) 0 -#endif - QT_BEGIN_NAMESPACE #if !defined(Q_CC_MIPS) @@ -230,28 +226,28 @@ mul_overflow(T v1, T v2, T *r) #endif // GCC 5 and Clang have builtins to detect overflows -#if (defined(Q_CC_GNU) && !defined(Q_CC_INTEL) && Q_CC_GNU >= 500) || __has_builtin(__builtin_uadd_overflow) +#if (defined(Q_CC_GNU) && !defined(Q_CC_INTEL) && Q_CC_GNU >= 500) || QT_HAS_BUILTIN(__builtin_uadd_overflow) template <> inline bool add_overflow(unsigned v1, unsigned v2, unsigned *r) { return __builtin_uadd_overflow(v1, v2, r); } #endif -#if (defined(Q_CC_GNU) && !defined(Q_CC_INTEL) && Q_CC_GNU >= 500) || __has_builtin(__builtin_uaddl_overflow) +#if (defined(Q_CC_GNU) && !defined(Q_CC_INTEL) && Q_CC_GNU >= 500) || QT_HAS_BUILTIN(__builtin_uaddl_overflow) template <> inline bool add_overflow(unsigned long v1, unsigned long v2, unsigned long *r) { return __builtin_uaddl_overflow(v1, v2, r); } #endif -#if (defined(Q_CC_GNU) && !defined(Q_CC_INTEL) && Q_CC_GNU >= 500) || __has_builtin(__builtin_uaddll_overflow) +#if (defined(Q_CC_GNU) && !defined(Q_CC_INTEL) && Q_CC_GNU >= 500) || QT_HAS_BUILTIN(__builtin_uaddll_overflow) template <> inline bool add_overflow(unsigned long long v1, unsigned long long v2, unsigned long long *r) { return __builtin_uaddll_overflow(v1, v2, r); } #endif -#if (defined(Q_CC_GNU) && !defined(Q_CC_INTEL) && Q_CC_GNU >= 500) || __has_builtin(__builtin_umul_overflow) +#if (defined(Q_CC_GNU) && !defined(Q_CC_INTEL) && Q_CC_GNU >= 500) || QT_HAS_BUILTIN(__builtin_umul_overflow) template <> inline bool mul_overflow(unsigned v1, unsigned v2, unsigned *r) { return __builtin_umul_overflow(v1, v2, r); } #endif -#if (defined(Q_CC_GNU) && !defined(Q_CC_INTEL) && Q_CC_GNU >= 500) || __has_builtin(__builtin_umull_overflow) +#if (defined(Q_CC_GNU) && !defined(Q_CC_INTEL) && Q_CC_GNU >= 500) || QT_HAS_BUILTIN(__builtin_umull_overflow) template <> inline bool mul_overflow(unsigned long v1, unsigned long v2, unsigned long *r) { return __builtin_umull_overflow(v1, v2, r); } #endif -#if (defined(Q_CC_GNU) && !defined(Q_CC_INTEL) && Q_CC_GNU >= 500) || __has_builtin(__builtin_umulll_overflow) +#if (defined(Q_CC_GNU) && !defined(Q_CC_INTEL) && Q_CC_GNU >= 500) || QT_HAS_BUILTIN(__builtin_umulll_overflow) template <> inline bool mul_overflow(unsigned long long v1, unsigned long long v2, unsigned long long *r) { return __builtin_umulll_overflow(v1, v2, r); } # define HAVE_MUL64_OVERFLOW |