void mexFunction( int nlhs, mxArray *plhs[],
int nrhs, const mxArray *prhs[]
) {
/* Declare */
unsigned int seed_init;
unsigned int s0, s1, s2, *ret;
if(nrhs!=1)
mexErrMsgTxt("Single input required.");
else if(nlhs > 1)
mexErrMsgTxt("Too many output arguments.");
/* Allocate input */
seed_init = (unsigned int) mxGetScalar(prhs[0]);
/* Algo */
#ifdef USER_MODE
struct drand48_data buffer;
unsigned int result = 0;
#endif
if (seed_init == 0) {
s0 = (unsigned int)time(NULL);
s1 = (unsigned int)time(NULL);
s2 = (unsigned int)time(NULL);
}
else {
#ifndef USER_MODE
s0 = (unsigned int)0x1e23d852;
s1 = (unsigned int)0x81f38a1c;
s2 = (unsigned int)0xfe1a133e;
#else
/* Use reentrant version of rand48 to ensure that no conflicts with other generators occur */
srand48_r((long int)seed_init, &buffer);
mrand48_r(&buffer, (long int *)&result);
s0 = result;
mrand48_r(&buffer, (long int *)&result);
s1 = result;
mrand48_r(&buffer, (long int *)&result);
s2 = result;
#endif
}
/* Allocate Output */
plhs[0] = mxCreateNumericMatrix(3, 1, mxUINT32_CLASS, mxREAL);
ret = (unsigned int*) mxGetPr(plhs[0]);
ret[0] = s0;
ret[1] = s1;
ret[2] = s2;
}
int
main (void)
{
time_t t = time (NULL);
int i, ret = 0;
double d;
long int l;
struct drand48_data data;
unsigned short int buf[3];
srand48 ((long int) t);
for (i = 0; i < 50; i++)
if ((d = drand48 ()) < 0.0 || d >= 1.0)
{
printf ("drand48 %d %g\n", i, d);
ret = 1;
}
srand48_r ((long int) t, &data);
for (i = 0; i < 50; i++)
if (drand48_r (&data, &d) != 0 || d < 0.0 || d >= 1.0)
{
printf ("drand48_r %d %g\n", i, d);
ret = 1;
}
buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
for (i = 0; i < 50; i++)
if ((d = erand48 (buf)) < 0.0 || d >= 1.0)
{
printf ("erand48 %d %g\n", i, d);
ret = 1;
}
buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
for (i = 0; i < 50; i++)
if (erand48_r (buf, &data, &d) != 0 || d < 0.0 || d >= 1.0)
{
printf ("erand48_r %d %g\n", i, d);
ret = 1;
}
srand48 ((long int) t);
for (i = 0; i < 50; i++)
if ((l = lrand48 ()) < 0 || l > INT32_MAX)
{
printf ("lrand48 %d %ld\n", i, l);
ret = 1;
}
srand48_r ((long int) t, &data);
for (i = 0; i < 50; i++)
if (lrand48_r (&data, &l) != 0 || l < 0 || l > INT32_MAX)
{
printf ("lrand48_r %d %ld\n", i, l);
ret = 1;
}
buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
for (i = 0; i < 50; i++)
if ((l = nrand48 (buf)) < 0 || l > INT32_MAX)
{
printf ("nrand48 %d %ld\n", i, l);
ret = 1;
}
buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
for (i = 0; i < 50; i++)
if (nrand48_r (buf, &data, &l) != 0 || l < 0 || l > INT32_MAX)
{
printf ("nrand48_r %d %ld\n", i, l);
ret = 1;
}
srand48 ((long int) t);
for (i = 0; i < 50; i++)
if ((l = mrand48 ()) < INT32_MIN || l > INT32_MAX)
{
printf ("mrand48 %d %ld\n", i, l);
ret = 1;
}
srand48_r ((long int) t, &data);
for (i = 0; i < 50; i++)
if (mrand48_r (&data, &l) != 0 || l < INT32_MIN || l > INT32_MAX)
{
printf ("mrand48_r %d %ld\n", i, l);
ret = 1;
}
buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
for (i = 0; i < 50; i++)
if ((l = jrand48 (buf)) < INT32_MIN || l > INT32_MAX)
{
printf ("jrand48 %d %ld\n", i, l);
ret = 1;
}
buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
for (i = 0; i < 50; i++)
if (jrand48_r (buf, &data, &l) != 0 || l < INT32_MIN || l > INT32_MAX)
{
printf ("jrand48_r %d %ld\n", i, l);
ret = 1;
}
return ret;
}
