Table of Contents
Previous Section Next Section

sqrt

#include <math.h>float sqrtf(float num);double sqrt(double num);
long double sqrtl(long double num);

sqrtf( ) and sqrtl( ) were added by C99.

The sqrt( ) family of functions returns the square root of num. If they are called with a negative argument, a domain error will occur.

Related functions are exp( ), log( ), and pow( ).


Table of Contents
Previous Section Next Section