diff -u opusfile/src/opusfile.c~ opusfile/src/opusfile.c

--- opusfile/src/opusfile.c~

+++ opusfile/src/opusfile.c

@@ -25,7 +25,9 @@

#include <limits.h>

#include <string.h>

#include <math.h>

-

+#if defined(_WIN64) && (defined(__x86_64__) || defined(_M_X64))

+#include <xmmintrin.h>

+#endif

#include "opusfile.h"

/*This implementation is largely based off of libvorbisfile.

@@ -3129,8 +3131,11 @@

#else

-# if defined(OP_HAVE_LRINTF)

-# include <math.h>

+# if defined(_WIN64) && (defined(__x86_64__) || defined(_M_X64))

+ static __inline long int op_float2int(float _x) {

+ return _mm_cvtss_si32(_mm_load_ss(&_x));

+ }

+# elif defined(OP_HAVE_LRINTF)

# define op_float2int(_x) (lrintf(_x))

# else

# define op_float2int(_x) ((int)((_x)+((_x)<0?-0.5F:0.5F)))