HP 3000 Manuals

Compiler Library/XL Reference Manual

SQRT (or SQRT') 

SQRT calculates the square root of a real number.

Declaration 

        FUNCTION SQRT(VAR x:REAL):REAL; EXTERNAL;

Accuracy 

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Attributes 

Parameter:                A non-negative real number.

Result:                   A non-negative real number.

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

Error:                    If the argument is a NaN or if it is negative,
                          there are two possible actions.  If the INVALID
                          trap is enabled, the message "SQRT(X): X<0.0 OR
                          X=NaN" occurs.  Otherwise, the INVALID flag is
                          set.  In either case, a quiet NaN is returned.

MPE/iX 5.0 Documentation