utilfloat.h - utils - old (and slightly embarrassing) C utility scripts

utilfloat.h (1574B)
      1 #include <stdlib.h>
      2 
      3 void prntFlArr(float* a0, int a1){
      4   for(int i = 0; i < a1; i++){
      5     if(i < a1 - 1) printf("%f, ", a0[i]);
      6     else printf("%f\n", a0[i]);
      7   }
      8 }
      9 
     10 float* flArr(int a0){
     11   float* ret = malloc(sizeof(float)*a0);
     12   for(int i = 0; i < a0; i++) ret[i] = 0;
     13   return ret;
     14 }
     15 
     16 float* flRnd(int a0){
     17   float* ret = malloc(sizeof(float)*a0);
     18   for(int i = 0; i < a0; i++) ret[i] = 2*((float)rand())/RAND_MAX - 1;
     19   return ret;
     20 }
     21 
     22 float** wFlArr(int a0, int a1){
     23   float** ret = malloc(sizeof(float*)*a0);
     24   for(int i = 0; i < a0; i++) ret[i] = flArr(a1);
     25   return ret;
     26 }
     27 
     28 float** wFlRnd(int a0, int a1){
     29   float** ret = malloc(sizeof(float*)*a0);
     30   for(int i = 0; i < a0; i++) ret[i] = flRnd(a1);
     31   return ret;
     32 }
     33 
     34 float* cpFlArr(float* a0, int a1){
     35   float* ret = malloc(sizeof(float)*a1);
     36   for(int i = 0; i < a1; i++) ret[i] = a0[i];
     37   return ret;
     38 }
     39 
     40 void pluseqFlArr(float* a0, float* a1, int a2){
     41   for(int i = 0; i < a2; i++) a0[i] = a0[i] + a1[i];
     42 }
     43 
     44 float* uf_arith(float* aF0, float* aF1, int aI0, int aI1, int aI2){
     45   //array 0, array 1, n rows, n cols, operation
     46   float* ret = malloc(sizeof(float)*aI0*aI1);
     47   for(int it0 = 0; it0 < aI0*aI1; it0++){
     48     if(aI2 == 0) ret[it0] = aF0[it0] + aF1[it0];
     49     else if(aI2 == 1) ret[it0] = aF0[it0] - aF1[it0];
     50     else if(aI2 == 2) ret[it0] = aF0[it0]*aF1[it0];
     51     else ret[it0] = aF0[it0]/aF1[it0];
     52   }
     53   return ret;
     54 }
     55 
     56 float* uf_mult(float* aF0, float* aF1, int aI0, int aI1, int aI2){
     57   //array 0, array 1, n row 0, n col 0 = n row 1, n col 1
     58   float* ret = malloc(sizeof(float)*aI0*aI2);
     59   return ret;
     60 }