Update to opus-HEAD-66611f1.

silk/mips/sigproc_fix_mipsr1.h

Index: silk/mips/sigproc_fix_mipsr1.h
diff --git a/silk/lin2log.c b/silk/mips/sigproc_fix_mipsr1.h
similarity index 73%
copy from silk/lin2log.c
copy to silk/mips/sigproc_fix_mipsr1.h
index d4fe515321f0d5b76d6d314ccff4d16f93f91838..3b0a6953656d97318f3aa83ebba9f208be1bd88b 100644
--- a/silk/lin2log.c
+++ b/silk/mips/sigproc_fix_mipsr1.h
@@ -25,22 +25,41 @@ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.
 ***********************************************************************/
 
-#ifdef HAVE_CONFIG_H
-#include "config.h"
+#ifndef SILK_SIGPROC_FIX_MIPSR1_H
+#define SILK_SIGPROC_FIX_MIPSR1_H
+
+#ifdef  __cplusplus
+extern "C"
+{
 #endif
 
-#include "SigProc_FIX.h"
-/* Approximation of 128 * log2() (very close inverse of silk_log2lin()) */
-/* Convert input to a log scale    */
-opus_int32 silk_lin2log(
-    const opus_int32            inLin               /* I  input in linear scale                                         */
-)
+#undef silk_SAT16
+static inline short int silk_SAT16(int a)
+{
+    int c;
+    c = __builtin_mips_shll_s_w(a, 16);
+    c = c>>16;
+
+    return c;
+}
+
+#undef silk_LSHIFT_SAT32
+static inline int silk_LSHIFT_SAT32(int a, int shift)
 {
-    opus_int32 lz, frac_Q7;
+    int r;
+
+    r = __builtin_mips_shll_s_w(a, shift);
 
-    silk_CLZ_FRAC( inLin, &lz, &frac_Q7 );
+    return r;
+}
+
+#undef silk_RSHIFT_ROUND
+static inline int silk_RSHIFT_ROUND(int a, int shift)
+{
+    int r;
 
-    /* Piece-wise parabolic approximation */
-    return silk_LSHIFT( 31 - lz, 7 ) + silk_SMLAWB( frac_Q7, silk_MUL( frac_Q7, 128 - frac_Q7 ), 179 );
+    r = __builtin_mips_shra_r_w(a, shift);
+    return r;
 }
 
+#endif /* SILK_SIGPROC_FIX_MIPSR1_H */