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Generate a pseudo-random integer in a thread-safe manner
#include <stdlib.h>
int rand_r( unsigned int* seed );
- seed
- A pointer to the seed for the sequence of pseudo-random numbers.
If you call rand_r() with the same initial value for the
seed, the same sequence is generated.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The rand_r() function computes, in a thread-safe manner,
a sequence of pseudo-random integers in the range 0 through
RAND_MAX.
A pseudo-random integer.
POSIX 1003.1 TSF
Safety: | |
Cancellation point |
No |
Interrupt handler |
No |
Signal handler |
Yes |
Thread |
Yes |
rand(),
srand()
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