HP 3000 Manuals

HP C/iX Library Reference Manual

fabs 

Computes the absolute value of a floating-point argument.

Syntax 

     #include <math.h>
     double fabs (double x);

Parameters 

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

Return Values 

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

Example 

The following program calculates floating-point absolute values until a
zero is entered from the keyboard:

     #include <math.h>
     main()
     {
       double value, fabs();
       do
       {
       printf("Enter value: ");
       scanf("%lf", &value);
       if (value == 0)
          exit
       printf("Absolute value of %.12g is %.12g.\n", value, fabs(value));
       }
       while (value !=0);
     }

See Also 

abs(), labs(), ANSI C 4.5.6.2, POSIX.1 8.1

MPE/iX 5.0 Documentation