mrand48()

Generate a pseudo-random signed long integer

Synopsis:

#include <stdlib.h>

long mrand48( void );

Library:

libc

Description:

The mrand48() function uses a linear congruential algorithm and 48-bit integer arithmetic to generate a signed long integer uniformly distributed over the interval [-2^31, 2^31).

Call one of lcong48(), seed48(), or srand48() to initialize the random-number generator before calling drand48(), lrand48(), or mrand48().

Returns:

A pseudo-random long integer.

Classification:

Standard Unix

Safety:
Cancellation point	No
Interrupt handler	No
Signal handler	No
Thread	No