?? abnormtable.c
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#include <math.h>#define TABLESIZE 16384doublenormal(double x, double mu, double sigma){ return .5 + .5*erf((x-mu)/(sqrt(2.0)*sigma));}main(int argc, char **argv){ double x, q; double *table; int i; table = (double *)malloc(TABLESIZE*sizeof(double)); if (!table) { perror("Sorry, no can do"); exit(1); } bzero(table, TABLESIZE*sizeof(double)); for (x = -10.0; x < 10.05; x += .00005) { i = (int)rint(TABLESIZE*normal(x, 0.0, 1.0)); table[i] = x; } for (i=0 ; i < TABLESIZE; i += 4) { q = (double)(i*4-32768)/(double)TABLESIZE; printf("%10.4f %10.4f\n", q, table[i]); }}
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