Article ID: 39068
Article Last Modified on 12/1/2003
APPLIES TO
- Microsoft FORTRAN Compiler 4.01
- Microsoft FORTRAN Compiler 4.1
- Microsoft FORTRAN Compiler 5.0
- Microsoft FORTRAN Compiler 5.1
- Microsoft FORTRAN Compiler 4.1
- Microsoft FORTRAN Compiler 5.0
- Microsoft FORTRAN Compiler 5.1
- Microsoft FORTRAN PowerStation 1.0 Standard Edition
- Microsoft Fortran PowerStation 1.0a for MS-DOS
- Microsoft FORTRAN PowerStation 32
- Microsoft FORTRAN PowerStation 32
This article was previously published under Q39068
SYMPTOMS
An attempt to compile an application developed in Microsoft FORTRAN fails with the following error message:
With Microsoft FORTRAN PowerStation 32, version 4.0, this generates:
CAUSE
A FORTRAN application cannot directly manipulate complex number variables.
RESOLUTION
Use the CMPLX intrinsic function to manipulate the variable, as follows:
Z = CMPLX(I, 1.2)
MORE INFORMATION
On Page 24, the Microsoft FORTRAN "Language Reference and Mixed-Language Programmer's Guide" for version 4.1 describes the complex data types as follows:
The COMPLEX or COMPLEX*8 data type is an ordered pair of single-
precision real numbers. COMPLEX*16 data type is an ordered pair of
double-precision real numbers. The first number in the pair represents
the real part of a complex number, and the second number represents the
imaginary part.
For example, the complex number (7, 3.2) represents the number 7.0+3.2i.
The following code example demonstrates this error message.
Sample Code
C Compiler options required: None
COMPLEX*8 Z
REAL*4 I
Z = (I, 1.2)
END
Additional query words: 1.00 4.00 4.01 4.10 5.00 5.10
Keywords: kberrmsg kblangfortran KB39068
