cosmetics: Rename prn variable to prng (Pseudo Random Number Generator).

Originally committed as revision 18422 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/cabac.c

@@ -191,14 +191,14 @@ int main(void){
     uint8_t r[9*SIZE];
     int i;
     uint8_t state[10]= {0};
-    AVLFG prn;
+    AVLFG prng;
 
-    av_lfg_init(&prn, 1);
+    av_lfg_init(&prng, 1);
     ff_init_cabac_encoder(&c, b, SIZE);
     ff_init_cabac_states(&c);
 
     for(i=0; i<SIZE; i++){
-        r[i] = av_lfg_get(&prn) % 7;
+        r[i] = av_lfg_get(&prng) % 7;
     }
 
     for(i=0; i<SIZE; i++){

libavcodec/dct-test.c

@@ -208,9 +208,9 @@ static void dct_error(const char *name, int is_idct,
     int64_t sysErr[64], sysErrMax=0;
     int maxout=0;
     int blockSumErrMax=0, blockSumErr;
-    AVLFG prn;
+    AVLFG prng;
 
-    av_lfg_init(&prn, 1);
+    av_lfg_init(&prng, 1);
 
     err_inf = 0;
     err2 = 0;
@@ -221,7 +221,7 @@ static void dct_error(const char *name, int is_idct,
         switch(test){
         case 0:
             for(i=0;i<64;i++)
-                block1[i] = (av_lfg_get(&prn) % 512) -256;
+                block1[i] = (av_lfg_get(&prng) % 512) -256;
             if (is_idct){
                 ff_ref_fdct(block1);
 
@@ -230,12 +230,12 @@ static void dct_error(const char *name, int is_idct,
             }
         break;
         case 1:{
-            int num = av_lfg_get(&prn) % 10 + 1;
+            int num = av_lfg_get(&prng) % 10 + 1;
             for(i=0;i<num;i++)
-                block1[av_lfg_get(&prn) % 64] = av_lfg_get(&prn) % 512 -256;
+                block1[av_lfg_get(&prng) % 64] = av_lfg_get(&prng) % 512 -256;
         }break;
         case 2:
-            block1[0] = av_lfg_get(&prn) % 4096 - 2048;
+            block1[0] = av_lfg_get(&prng) % 4096 - 2048;
             block1[63]= (block1[0]&1)^1;
         break;
         }
@@ -335,7 +335,7 @@ static void dct_error(const char *name, int is_idct,
     switch(test){
     case 0:
         for(i=0;i<64;i++)
-            block1[i] = av_lfg_get(&prn) % 512 -256;
+            block1[i] = av_lfg_get(&prng) % 512 -256;
         if (is_idct){
             ff_ref_fdct(block1);
 
@@ -345,10 +345,10 @@ static void dct_error(const char *name, int is_idct,
     break;
     case 1:{
     case 2:
-        block1[0] = av_lfg_get(&prn) % 512 -256;
-        block1[1] = av_lfg_get(&prn) % 512 -256;
-        block1[2] = av_lfg_get(&prn) % 512 -256;
-        block1[3] = av_lfg_get(&prn) % 512 -256;
+        block1[0] = av_lfg_get(&prng) % 512 -256;
+        block1[1] = av_lfg_get(&prng) % 512 -256;
+        block1[2] = av_lfg_get(&prng) % 512 -256;
+        block1[3] = av_lfg_get(&prng) % 512 -256;
     }break;
     }
 
@@ -472,9 +472,9 @@ static void idct248_error(const char *name,
 {
     int it, i, it1, ti, ti1, err_max, v;
 
-    AVLFG prn;
+    AVLFG prng;
 
-    av_lfg_init(&prn, 1);
+    av_lfg_init(&prng, 1);
 
     /* just one test to see if code is correct (precision is less
        important here) */
@@ -483,7 +483,7 @@ static void idct248_error(const char *name,
 
         /* XXX: use forward transform to generate values */
         for(i=0;i<64;i++)
-            block1[i] = av_lfg_get(&prn) % 256 - 128;
+            block1[i] = av_lfg_get(&prng) % 256 - 128;
         block1[0] += 1024;
 
         for(i=0; i<64; i++)

libavcodec/fft-test.c

@@ -131,9 +131,9 @@ static void mdct_ref(float *output, float *input, int nbits)
 
 static float frandom(void)
 {
-    AVLFG prn;
-    av_lfg_init(&prn, 1);
-    return (float)((av_lfg_get(&prn) & 0xffff) - 32768) / 32768.0;
+    AVLFG prng;
+    av_lfg_init(&prng, 1);
+    return (float)((av_lfg_get(&prng) & 0xffff) - 32768) / 32768.0;
 }
 
 static int64_t gettime(void)

libavcodec/motion-test.c

@@ -45,12 +45,12 @@ uint8_t img2[WIDTH * HEIGHT];
 static void fill_random(uint8_t *tab, int size)
 {
     int i;
-    AVLFG prn;
+    AVLFG prng;
 
-    av_lfg_init(&prn, 1);
+    av_lfg_init(&prng, 1);
     for(i=0;i<size;i++) {
 #if 1
-        tab[i] = av_lfg_get(&prn) % 256;
+        tab[i] = av_lfg_get(&prng) % 256;
 #else
         tab[i] = i;
 #endif

libavcodec/rangecoder.c

@@ -120,9 +120,9 @@ int main(void){
     uint8_t r[9*SIZE];
     int i;
     uint8_t state[10]= {0};
-    AVLFG prn;
+    AVLFG prng;
 
-    av_lfg_init(&prn, 1);
+    av_lfg_init(&prng, 1);
 
     ff_init_range_encoder(&c, b, SIZE);
     ff_build_rac_states(&c, 0.05*(1LL<<32), 128+64+32+16);
@@ -130,7 +130,7 @@ int main(void){
     memset(state, 128, sizeof(state));
 
     for(i=0; i<SIZE; i++){
-        r[i] = av_lfg_get(&prn) % 7;
+        r[i] = av_lfg_get(&prng) % 7;
     }
 
     for(i=0; i<SIZE; i++){

libavcodec/snow.c

@@ -4721,15 +4721,15 @@ int main(void){
     int buffer[2][width*height];
     SnowContext s;
     int i;
-    AVLFG prn;
+    AVLFG prng;
     s.spatial_decomposition_count=6;
     s.spatial_decomposition_type=1;
 
-    av_lfg_init(&prn, 1);
+    av_lfg_init(&prng, 1);
 
     printf("testing 5/3 DWT\n");
     for(i=0; i<width*height; i++)
-        buffer[0][i] = buffer[1][i] = av_lfg_get(&prn) % 54321 - 12345;
+        buffer[0][i] = buffer[1][i] = av_lfg_get(&prng) % 54321 - 12345;
 
     ff_spatial_dwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
     ff_spatial_idwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
@@ -4740,7 +4740,7 @@ int main(void){
     printf("testing 9/7 DWT\n");
     s.spatial_decomposition_type=0;
     for(i=0; i<width*height; i++)
-        buffer[0][i] = buffer[1][i] = av_lfg_get(&prn) % 54321 - 12345;
+        buffer[0][i] = buffer[1][i] = av_lfg_get(&prng) % 54321 - 12345;
 
     ff_spatial_dwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
     ff_spatial_idwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);

libavutil/aes.c

@@ -208,12 +208,12 @@ int main(void){
         {0x73, 0x22, 0x81, 0xc0, 0xa0, 0xaa, 0xb8, 0xf7, 0xa5, 0x4a, 0x0c, 0x67, 0xa0, 0xc4, 0x5e, 0xcf},
         {0x6d, 0x25, 0x1e, 0x69, 0x44, 0xb0, 0x51, 0xe0, 0x4e, 0xaa, 0x6f, 0xb4, 0xdb, 0xf7, 0x84, 0x65}};
     uint8_t temp[16];
-    AVLFG prn;
+    AVLFG prng;
 
     av_aes_init(&ae, "PI=3.141592654..", 128, 0);
     av_aes_init(&ad, "PI=3.141592654..", 128, 1);
     av_log_set_level(AV_LOG_DEBUG);
-    av_lfg_init(&prn, 1);
+    av_lfg_init(&prng, 1);
 
     for(i=0; i<2; i++){
         av_aes_init(&b, rkey[i], 128, 1);
@@ -225,7 +225,7 @@ int main(void){
 
     for(i=0; i<10000; i++){
         for(j=0; j<16; j++){
-            pt[j] = av_lfg_get(&prn);
+            pt[j] = av_lfg_get(&prng);
         }
 {START_TIMER
         av_aes_crypt(&ae, temp, pt, 1, NULL, 0);

libavutil/pca.c

@@ -174,18 +174,18 @@ int main(void){
 #define LEN 8
     double eigenvector[LEN*LEN];
     double eigenvalue[LEN];
-    AVLFG prn;
+    AVLFG prng;
 
-    av_lfg_init(&prn, 1);
+    av_lfg_init(&prng, 1);
 
     pca= ff_pca_init(LEN);
 
     for(i=0; i<9000000; i++){
         double v[2*LEN+100];
         double sum=0;
-        int pos = av_lfg_get(&prn) % LEN;
-        int v2  = av_lfg_get(&prn) % 101 - 50;
-        v[0]    = av_lfg_get(&prn) % 101 - 50;
+        int pos = av_lfg_get(&prng) % LEN;
+        int v2  = av_lfg_get(&prng) % 101 - 50;
+        v[0]    = av_lfg_get(&prng) % 101 - 50;
         for(j=1; j<8; j++){
             if(j<=pos) v[j]= v[0];
             else       v[j]= v2;
@@ -194,7 +194,7 @@ int main(void){
 /*        for(j=0; j<LEN; j++){
             v[j] -= v[pos];
         }*/
-//        sum += av_lfg_get(&prn) % 10;
+//        sum += av_lfg_get(&prng) % 10;
 /*        for(j=0; j<LEN; j++){
             v[j] -= sum/LEN;
         }*/

libavutil/tree.c

@@ -182,12 +182,12 @@ int main(void){
     int i;
     void *k;
     AVTreeNode *root= NULL, *node=NULL;
-    AVLFG prn;
+    AVLFG prng;
 
-    av_lfg_init(&prn, 1);
+    av_lfg_init(&prng, 1);
 
     for(i=0; i<10000; i++){
-        int j = av_lfg_get(&prn) % 86294;
+        int j = av_lfg_get(&prng) % 86294;
         if(check(root) > 999){
             av_log(NULL, AV_LOG_ERROR, "FATAL error %d\n", i);
         print(root, 0);
@@ -198,7 +198,7 @@ int main(void){
             node= av_mallocz(av_tree_node_size);
         av_tree_insert(&root, (void*)(j+1), cmp, &node);
 
-        j = av_lfg_get(&prn) % 86294;
+        j = av_lfg_get(&prng) % 86294;
         {
             AVTreeNode *node2=NULL;
             av_log(NULL, AV_LOG_ERROR, "removing %4d\n", j);