RAND_MAX

C

Language

Headers

Type support

Program utilities

Variadic function support

Error handling

Dynamic memory management

Date and time utilities

Strings library

Algorithms

Numerics

Input/output support

Localization support

Atomic operations (C11)

Thread support (C11)

Technical Specifications

Numerics

Common mathematical functions

Floating-point environment

Complex number arithmetics

Random number generation

Type-generic math

Pseudo-random number generation

rand

srand

RAND_MAX

Defined in header <stdlib.h>
#define RAND_MAX /*implementation defined*/

Expands to an integer constant expression equal to the maximum value returned by the function rand(). This value is implementation dependent. It's guaranteed that this value is at least 32767.

References

• C11 standard (ISO/IEC 9899:2011):

• 7.22/3 General utilities <stdlib.h> (p: 340)

• C99 standard (ISO/IEC 9899:1999):

• 7.20/3 General utilities <stdlib.h> (p: 306)

• C89/C90 standard (ISO/IEC 9899:1990):

• 4.10 GENERAL UTILITIES <stdlib.h>

See also

rand	generates a pseudo-random number (function)
srand	seeds pseudo-random number generator (function)