Article ID: 125469
Article Last Modified on 12/9/2003
APPLIES TO
- 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 Q125469
SYMPTOMS
The code compiles, links, and runs with no errors, but some of the run-time subroutines do not appear to function correctly. Unexpected results are returned.
CAUSE
The subroutine may not have an interface statement or a parameter used in the subroutine may not be defined.
RESOLUTION
Include FLIB.FI prior to the PROGRAM statement or as the first line in any file that uses these subroutines or functions. Also, include FLIB.FD inside the main program or any subroutine or function that uses the run- time subroutines.
MORE INFORMATION
The following code sample compiles, links, and runs without generating an error, but the array is not sorted and the random seed is initialized with a zero. In the case of the SORTQQ routine, the last argument is a parameter defined in FLIB.FD. Because that file is not included, the variable is typed as a REAL and initialized to zero. SORTQQ fails to sort because the size of the data items to be sorted is zero.
If the file FLIB.FI is included by changing the first INCLUDE from a comment into an executed line, you will receive these errors:
If the variables passed to these routines are type compatible and indicate correct values, the program may run correctly.
To solve the problem in the sample below, change both include lines from comments into executable lines.
Additionally, there may be several run-time subroutines that use parameters defined in the FLIB.FD file, but the documentation fails to indicate that you must include FLIB.FD. The following is a partial list of those subroutines:
ELLIPSE, ELLIPSE_W
GETWRITEMODE
PIE, PIE_W
REMAPALLPALETTE, REMAPPALETE
SEED
SETWRITEMODE
Sample Code
C Compile options needed: none
C INCLUDE 'flib.fi'
PROGRAM Test
C INCLUDE 'flib.fd'
INTEGER maxsize
INTEGER*4 buf(100)
INTEGER*4 i
REAL*4 rdm
PRINT*, "Enter the number of values (max = 100): "
READ(*, "(I4)") maxsize
IF(maxsize .GT. 100 ) maxsize = 100
CALL SEED(RND$TIMESEED)
DO i = 1, maxsize
CALL RANDOM(rdm)
C Random value from 1 to maxsize
buf(i) = INT4(rdm * maxsize + 1.0)
END DO
C Print out the unsorted array
WRITE(*, "(5I6)") (buf(i), i = 1, maxsize)
PRINT*
C Sort the array
CALL SORTQQ(LOC(buf), maxsize, SRT$INTEGER4)
C Print out the sorted array
WRITE(*, "(5I6)") (buf(i), i = 1, maxsize)
PRINT*
END
Additional query words: 1.00 1.00a 4.00 fail bomb incorrect bad runtime
Keywords: kblangfortran KB125469
