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lines 302-361 of file: test_more/compare_c/det_by_minor.c
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{xrst_begin uniform_01_c app}

Simulate a [0,1] Uniform Random Variate
#######################################

Syntax
******

   ``random_seed`` ( *seed* )

``uniform_01`` ( *n* , *a* )

Purpose
*******
This routine is used to create random values for speed testing purposes.

seed
****
The argument *seed* has prototype

   ``size_t`` *seed*

It specifies a seed
for the uniform random number generator.

n
*
The argument *n* has prototype

   ``size_t`` *n*

It specifies the number of elements in the random vector *a* .

a
*
The argument *a* has prototype

   ``double`` * *a*

.
The input value of the elements of *a* does not matter.
Upon return, the elements of *a* are set to values
randomly sampled over the interval [0,1].

Source Code
***********
{xrst_spell_off}
{xrst_code cpp} */
void random_seed(size_t seed)
{  srand( (unsigned int) seed );
}
void uniform_01(size_t n, double* a)
{  static double factor = 1. / (double) RAND_MAX;
   while(n--)
      a[n] = rand() * factor;
}
/* {xrst_code}
{xrst_spell_on}

{xrst_end uniform_01_c}