int f_rand(int argc, const int *argt, void **args)
{
int i;
if (argc < 2)
return E_ARG_LO;
if (argc > 2)
return E_ARG_HI;
switch (argt[0]) {
case CELL_TYPE:
{
CELL *res = args[0];
CELL *arg1 = args[1];
CELL *arg2 = args[2];
for (i = 0; i < columns; i++) {
unsigned long x = (unsigned long)G_mrand48();
int lo = arg1[i];
int hi = arg2[i];
if (lo > hi) {
int tmp = lo;
lo = hi;
hi = tmp;
}
res[i] = (lo == hi) ? lo : lo + x % (unsigned long)(hi - lo);
}
return 0;
}
case FCELL_TYPE:
{
FCELL *res = args[0];
FCELL *arg1 = args[1];
FCELL *arg2 = args[2];
for (i = 0; i < columns; i++) {
double x = G_drand48();
FCELL lo = arg1[i];
FCELL hi = arg2[i];
if (lo > hi) {
FCELL tmp = lo;
lo = hi;
hi = tmp;
}
res[i] = (FCELL) (lo + x * (hi - lo));
}
return 0;
}
case DCELL_TYPE:
{
DCELL *res = args[0];
DCELL *arg1 = args[1];
DCELL *arg2 = args[2];
for (i = 0; i < columns; i++) {
double x = G_drand48();
DCELL lo = arg1[i];
DCELL hi = arg2[i];
if (lo > hi) {
DCELL tmp = lo;
lo = hi;
hi = tmp;
}
res[i] = lo + x * (hi - lo);
}
return 0;
}
default:
return E_INV_TYPE;
}
}
float G_math_rand(void)
{
return G_drand48();
}
