exp2(), exp2f(), exp2l() — Calculate the base-2 exponential
Standards
| Standards / Extensions | C or C++ | Dependencies |
|---|---|---|
C99
Single UNIX Specification, Version 3 C++ TR1 C99 |
both | z/OS® V1R7 |
Format
#define _ISOC99_SOURCE
#include <math.h>
double exp2(double x);
float exp2f(float x);
long double exp2l(long double x);C++ TR1 C99:
#define _TR1_C99
#include <math.h>
float exp2(float x);
long double exp2(long double x);General description
The exp2 functions
compute the base-2 exponential of x.
Note: The
following table shows the viable formats for these functions. See IEEE binary floating-point for more information about IEEE
Binary Floating-Point.
| Function | Hex | IEEE |
|---|---|---|
| exp2 | X | X |
| exp2f | X | X |
| exp2l | X | X |
Returned value
The exp2 functions return 2 to the power x.