HP 3000 Manuals

Compiler Library/XL Reference Manual

CSIN (or CSIN') 

CSIN calculates the sine of a complex number.

Declaration 

Complex numbers in HP FORTRAN 77/XL programs are represented as an
ordered pair of real numbers:  one for the real part a and one for the
imaginary part b.  Thus, complex numbers occupy eight bytes.

     TYPE complex=RECORD
                   realpart:REAL;
                   imagpart:REAL;
                  END;

     FUNCTION CSIN(VAR x:complex):complex; EXTERNAL;

Accuracy 

Depends on the accuracy of SIN, COS, and EXP.

Attributes 

Parameter:                A complex number.

Result:                   A complex number.

HP FORTRAN 77/XL:         Intrinsic function:  Y=CSIN(X).

Error:                    See the SIN, COS, and EXP error descriptions.

MPE/iX 5.0 Documentation