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Making gcc use SSE directly for float->int conversion when available

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This commit is contained in:
Jean-Marc Valin 2016-08-13 02:53:12 -04:00
parent 9f7e502e06
commit cd159fd1ec
1 changed files with 7 additions and 1 deletions
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8
celt/float_cast.h
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@ -61,7 +61,13 @@
** the config.h file.
*/
#if (HAVE_LRINTF)
/* With GCC, when SSE is available, the fastest conversion is cvtss2si. */
#if defined(__GNUC__) && defined(__SSE__)
#include <xmmintrin.h>
static OPUS_INLINE opus_int32 float2int(float x) {return _mm_cvt_ss2si(_mm_set_ss(x));}
#elif defined(HAVE_LRINTF)
/* These defines enable functionality introduced with the 1999 ISO C
** standard. They must be defined before the inclusion of math.h to