pow

Defined in header `<math.h>`

float powf( float base, float exp );		(since C99)

double pow( double base, double exp );

long double powl( long double base, long double exp );		(since C99)

Computes the value of base raised to the power exp or iexp.

base	-	base as floating point value
exp	-	exponent as floating point value
iexp	-	exponent as integer value

base raised by power (exp or iexp).

Domain error occurs if base is 0 and exp is less than or equal to 0. NAN is returned in that case.

Domain error occurs if base is negative and exp is not an integer value. NAN is returned in that case.

Range error occurs if an overflow takes place. HUGEVAL is returned in that case.


exp	returns e raised to the given power ( $e x$ ) (function) [edit]

log	computes natural (base e) logarithm (to base e) ( $ln(x)$ ) (function) [edit]

sqrt	computes square root ( $\sqrt x$ ) (function) [edit]

cbrt (C99)	computes cubic root ( $3 \sqrt x$ ) (function) [edit]

C++ documentation for pow

Common mathematical functions
Floating-point environment
Complex number arithmetics
Random number generation
Type-generic math