@@ -61,7 +61,8 @@ static const uint8_t *run_value_bits[2] = {

  */

 static av_always_inline int quant(float coef, const float Q)

 {

-    return pow(coef * Q, 0.75) + 0.4054;

+    float a = coef * Q;

+    return sqrtf(a * sqrtf(a)) + 0.4054;

 }

 static void quantize_bands(int (*out)[2], const float *in, const float *scaled,

@@ -84,8 +85,10 @@ static void abs_pow34_v(float *out, const float *in, const int size)

 {

 #ifndef USE_REALLY_FULL_SEARCH

     int i;

-    for (i = 0; i < size; i++)

-        out[i] = pow(fabsf(in[i]), 0.75);

+    for (i = 0; i < size; i++) {

+        float a = fabsf(in[i]);

+        out[i] = sqrtf(a * sqrtf(a));

+    }

 #endif /* USE_REALLY_FULL_SEARCH */

 }

@@ -110,7 +113,7 @@ static float quantize_band_cost(struct AACEncContext *s, const float *in,

     const int dim = cb < FIRST_PAIR_BT ? 4 : 2;

     int resbits = 0;

 #ifndef USE_REALLY_FULL_SEARCH

-    const float  Q34 = pow(Q, 0.75);

+    const float  Q34 = sqrtf(Q * sqrtf(Q));

     const int range  = aac_cb_range[cb];

     const int maxval = aac_cb_maxval[cb];

     int offs[4];

@@ -225,7 +228,7 @@ static void quantize_and_encode_band(struct AACEncContext *s, PutBitContext *pb,

     const int dim = (cb < FIRST_PAIR_BT) ? 4 : 2;

     int i, j, k;

 #ifndef USE_REALLY_FULL_SEARCH

-    const float  Q34 = pow(Q, 0.75);

+    const float  Q34 = sqrtf(Q * sqrtf(Q));

     const int range  = aac_cb_range[cb];

     const int maxval = aac_cb_maxval[cb];

     int offs[4];