Node: SqRt Intrinsic, Next: SRand Intrinsic, Previous: Spread Intrinsic, Up: Table of Intrinsic Functions

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``)`

.