fabs -- Floating-Point Conversion: Absolute Value


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