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| author | Julian Taylor <jtaylor.debian@googlemail.com> | 2014-11-20 23:58:22 +0100 |
|---|---|---|
| committer | Julian Taylor <jtaylor.debian@googlemail.com> | 2014-11-21 00:00:33 +0100 |
| commit | 668668600d0097d26b41861f9dd3cdbe24cf7472 (patch) | |
| tree | 6d3ce39dc24e3d4c4445a74c47c53e186e31c31e /numpy/core/setup_common.py | |
| parent | 31b94e85a99db998bd6156d2b800386973fef3e1 (diff) | |
| download | numpy-668668600d0097d26b41861f9dd3cdbe24cf7472.tar.gz | |
ENH: use gcc intrinsic for overflow checked multiplication
More efficient as it uses processor overflow flags if available.
Diffstat (limited to 'numpy/core/setup_common.py')
| -rw-r--r-- | numpy/core/setup_common.py | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/numpy/core/setup_common.py b/numpy/core/setup_common.py index e51797c03..0b18bc6c6 100644 --- a/numpy/core/setup_common.py +++ b/numpy/core/setup_common.py @@ -118,6 +118,7 @@ OPTIONAL_INTRINSICS = [("__builtin_isnan", '5.'), ("__builtin_bswap32", '5u'), ("__builtin_bswap64", '5u'), ("__builtin_expect", '5, 0'), + ("__builtin_mul_overflow", '5, 5, (int*)5'), ("_mm_load_ps", '(float*)0', "xmmintrin.h"), # SSE ("_mm_load_pd", '(double*)0', "emmintrin.h"), # SSE2 ] |