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9.227 REAL — Convert to real type

Description:

REAL(A [, KIND]) converts its argument A to a real type. The REALPART function is provided for compatibility with g77, and its use is strongly discouraged.

Standard:

Fortran 77 and later

Class:

Elemental function

Syntax:
RESULT = REAL(A [, KIND])
RESULT = REALPART(Z)
Arguments:
AShall be INTEGER, REAL, or COMPLEX.
KIND(Optional) An INTEGER initialization expression indicating the kind parameter of the result.
Return value:

These functions return a REAL variable or array under the following rules:

(A)

REAL(A) is converted to a default real type if A is an integer or real variable.

(B)

REAL(A) is converted to a real type with the kind type parameter of A if A is a complex variable.

(C)

REAL(A, KIND) is converted to a real type with kind type parameter KIND if A is a complex, integer, or real variable.

Example:
program test_real
  complex :: x = (1.0, 2.0)
  print *, real(x), real(x,8), realpart(x)
end program test_real
Specific names:
NameArgumentReturn typeStandard
FLOAT(A)INTEGER(4)REAL(4)Fortran 77 and later
DFLOAT(A)INTEGER(4)REAL(8)GNU extension
FLOATI(A)INTEGER(2)REAL(4)GNU extension
FLOATJ(A)INTEGER(4)REAL(4)GNU extension
FLOATK(A)INTEGER(8)REAL(4)GNU extension
SNGL(A)INTEGER(8)REAL(4)Fortran 77 and later
See also:

DBLE


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