HP 3000 Manuals

HP COBOL II/XL Reference Manual

SIN Function 

The SIN function returns the sine of an angle, expressed in radians.  The
function type is numeric.

Syntax 

     FUNCTION SIN (parameter-1)

Parameters 

parameter-1           The size of an angle in radians.  Must be class
                      numeric.

Return Value 

The value returned is the approximation of the sine of parameter-1 and is
between -1 and 1, inclusive.  The value returned is numeric.

Example 

     77  ANGLE-RADIANS      PIC S99V9(5) VALUE 3.14159.
     77  SIN-OF-ANGLE       PIC S9V9(5)  VALUE ZERO.
             :
     COMPUTE SIN-OF-ANGLE = FUNCTION SIN (ANGLE-RADIANS).
     DISPLAY ANGLE-RADIANS.
     DISPLAY SIN-OF-ANGLE.

     DIVIDE ANGLE-RADIANS BY 4 GIVING ANGLE-RADIANS.
     COMPUTE SIN-OF-ANGLE = FUNCTION SIN (ANGLE-RADIANS).
     DISPLAY ANGLE-RADIANS.
     DISPLAY SIN-OF-ANGLE.

The above example displays the following:

     +03.14159
     +0.00000
     +00.78539
     +0.70710

MPE/iX 5.0 Documentation