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-rw-r--r--celt/float_cast.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/celt/float_cast.h b/celt/float_cast.h
index ed5a39b5..98b40abc 100644
--- a/celt/float_cast.h
+++ b/celt/float_cast.h
@@ -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