C fabs() Function

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C fabs() Function

The fabs() function returns the absolute value of the given number.

This function is defined in <math.h> header file.

Note: The abs() is used to calculate the absolute value for integer type numbers whereas fabs() are used for floating type numbers.


C Compiler
#include <stdio.h> #include <math.h> int main() { printf("fabs(-2.45) = %.2lf\n", fabs(-2.45)); printf("fabs(2.45) = %.2lf", fabs(2.45)); return 0; }


fabs(-2.45) = 2.45 fabs(2.45) = 2.45


double fabs(double x)

Parameter Values

xRequiredSpecifies a floating point value.

Return Value

NumberReturns the absolute value of the given number.


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