Updated: April 19, 2023 |
Generate a pseudo-random nonnegative long integer
#include <stdlib.h> long lrand48( void );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The lrand48() function uses a linear congruential algorithm and 48-bit integer arithmetic to generate a nonnegative long integer uniformly distributed over the interval [0, 231).
Call one of lcong48(), seed48(), or srand48() to initialize the random-number generator before calling drand48(), lrand48(), or mrand48(),
The nrand48() function is a thread-safe version of lrand48().
A pseudo-random long integer.
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | No |
Thread | No |