HP C/iX Library Reference Manual (30026-90004)

140 Chapter5

HP C/iX Library Function Descriptions

fabs

Computes the absolute value of a ﬂoating-point argument.

Syntax

#include <math.h>

double fabs (double

);

Parameters

A ﬂoating-point value whose absolute value is to be computed.

Return Values

n The absolute value of the ﬂoating-point value speciﬁed in

Example

The following program calculates ﬂoating-point absolute values until a zero is entered

from the keyboard:

#include <math.h>

main()

{

double value, fabs();

{

printf("Enter value: ");

scanf("%lf", &value);

if (value == 0)

exit

printf("Absolute value of %.12g is %.12g.\n", value, fabs(value));

}

while (value !=0);

}