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