fabs

fabs

Floating-Point Conversion: Absolute Value

Portability: ISO/ANSI C conforming, UNIX compatible

SYNOPSIS
DESCRIPTION
RETURN VALUE
IMPLEMENTATION
EXAMPLE
RELATED FUNCTIONS
SEE ALSO

SYNOPSIS

#include <math.h>

double fabs(double y);

DESCRIPTION

fabs takes the absolute value of a double-precision, floating-point number.

RETURN VALUE

fabs returns the absolute value of the argument y . Both the operand y and the result are of type double .

IMPLEMENTATION

fabs is implemented as a built-in function unless it is undefined by an #undef statement.

EXAMPLE

#include <math.h>
#include <stdio.h>

main()
{
  double a, b, c;

  puts("Enter values for a & b");
  scanf("%lf %lf", &a, &b);
  c = fabs(a-b);
  printf("The absolute value of their difference = %f", c );
}

RELATED FUNCTIONS

abs , labs

SEE ALSO

Mathematical Functions

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