SQRT — Square-root function#

SQRT(X)#

SQRT(X) computes the square root of X.

Parameters

X – The type shall be REAL or COMPLEX.

Returns

The return value is of type REAL or COMPLEX. The kind type parameter is the same as X.

Standard:

Fortran 77 and later

Class:

Elemental function

Syntax:
RESULT = SQRT(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 77 and later

DSQRT(X)

REAL(8) X

REAL(8)

Fortran 77 and later

CSQRT(X)

COMPLEX(4) X

COMPLEX(4)

Fortran 77 and later

ZSQRT(X)

COMPLEX(8) X

COMPLEX(8)

GNU extension

CDSQRT(X)

COMPLEX(8) X

COMPLEX(8)

GNU extension