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(g77-300.info)SqRt Intrinsic

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SqRt Intrinsic
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     SqRt(X)

SqRt: `REAL' or `COMPLEX' function, the exact type being that of
argument X.

X: `REAL' or `COMPLEX'; scalar; INTENT(IN).

Intrinsic groups: (standard FORTRAN 77).

Description:

   Returns the square root of X, which must not be negative.

   To calculate and represent the square root of a negative number,
complex arithmetic must be used.  For example, `SQRT(COMPLEX(X))'.

   The inverse of this function is `SQRT(X) * SQRT(X)'.