Lahey/GNU Fortran

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8.231 SQRT — Square-root function

Description:
SQRT(X) computes the square root of X.
Standard:
Fortran 77 and later
Class:
Elemental function
Syntax:
RESULT = SQRT(X)
Arguments:

X The type shall be REAL or COMPLEX.

Return value:
The return value is of type REAL or COMPLEX. The kind type parameter is the same as X.
Example:
          program test_sqrt
            real(8) :: x = 2.0_8
            complex :: z = (1.0, 2.0)
            x = sqrt(x)
            z = sqrt(z)
          end program test_sqrt
     

Specific names:

Name Argument Return type Standard
SQRT(X) REAL(4) X REAL(4) Fortran 95 and later
DSQRT(X) REAL(8) X REAL(8) Fortran 95 and later
CSQRT(X) COMPLEX(4) X COMPLEX(4) Fortran 95 and later
ZSQRT(X) COMPLEX(8) X COMPLEX(8) GNU extension
CDSQRT(X) COMPLEX(8) X COMPLEX(8) GNU extension