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Making bits2pulses() use a fixed number of iterations to allow further
optimisations.

--- a/libcelt/rate.c

+++ b/libcelt/rate.c

@@ -154,11 +154,15 @@

 static int bits2pulses(const CELTMode *m, int band, int bits)

 {

+   int i;

    int lo, hi;

    lo = 0;

    hi = MAX_PULSES-1;

-   while (hi-lo != 1)

+   /* Instead of using the "bisection confition" we use a fixed number of 

+      iterations because it should be faster */

+   /*while (hi-lo != 1)*/

+   for (i=0;i<LOG_MAX_PULSES;i++)

    {

       int mid = (lo+hi)>>1;

       if (m->bits[band][mid] >= bits)

--- a/libcelt/rate.h

+++ b/libcelt/rate.h

@@ -33,6 +33,7 @@

 #define RATE_H

 #define MAX_PULSES 64

+#define LOG_MAX_PULSES 6

 /** Computes a cache of the pulses->bits mapping in each band */

 void compute_alloc_cache(CELTMode *m);