[9529] in Athena Bugs
IBM RS6000 7.3: Rand
daemon@ATHENA.MIT.EDU (ellis@Athena.MIT.EDU)
Wed Jul 1 10:46:52 1992
From: ellis@Athena.MIT.EDU
To: bugs@Athena.MIT.EDU
Date: Wed, 01 Jul 92 10:46:38 EDT
System name: m37-332-4
Type and version: POWER 7.3
Display type: colorgda
What were you trying to do?
Use the rand() function as documented.
What's wrong:
The documentation on rand() says that compiling with -lbsd should
cause the range of random numbers to change from 2^15-1 to 2^31-1.
The following example code should produce different results when
compiled with -lbsd. However, when compiled, with and without -lbsd,
no change occurs. The range of random numbers remains 0 to 2^15-1.
#include <stdlib.h>
main()
{
int seed = -1;
float y;
int i;
srand(seed);
for(i=0; i<=100; i++)
{
y = rand();
printf("i = %d y = %f \n", i,y);
}
}
What should have happened:
When compiled with -lbsd range of random numbers should be 0 to 2^31-1.
Please describe any relevant documentation references:
Online info for rand() function
