DOCUMENT:Q150128 02-NOV-1999 [fortran] TITLE :BUG: MATHERRQQ() Complex Result Variable Not Used PRODUCT :Microsoft Fortran Compiler PROD/VER::4.0 OPER/SYS: KEYWORDS:kbFortranPS kbLangFortrankbbuglist ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Fortran PowerStation for Windows 95 and Windows NT, version 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When you use the MATHERRQQ() run-time subroutine to handle complex number math errors and you input a return value into either the C8RES or the C16RES function result variables, members of the MTH$E_INFO data structure, the value is not returned to the calling function that created the math error. STATUS ====== Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available. MORE INFORMATION ================ Steps to Reproduce Problem -------------------------- Build and run the sample code listed below. The program prompts you for the desired function result when the complex math error is encountered. When you type in a value for the desired function result, the value is not returned to clog(). Sample Code ----------- ! Compile options needed: /MT PROGRAM COMPLX COMPLEX(4) c1, c2 /(0.0, 0.0)/ c1 = clog(c2) WRITE(*, *) c1 END PROGRAM COMPLX SUBROUTINE MATHERRQQ( name, length, info, retcode) USE MSFLIB INTEGER(2) length, retcode CHARACTER(length) name RECORD /MTH$E_INFO/ info PRINT *, "Entered MATHERRQQ" PRINT *, "Failing function is: ", name PRINT *, "Error type is: ", info.errcode IF((info.ftype==TY$CMPLX8).OR.(info.ftype==TY$CMPLX16)) THEN PRINT *, "Type: COMPLEX" PRINT *, "Enter the desired function result: " READ(*,*) info.c16res retcode = 1 END IF END Additional query words: 4.00 ====================================================================== Keywords : kbFortranPS kbLangFortran kbbuglist Technology : kbAudDeveloper kbPTProdChange kbFortranSearch kbFORTRANPower400NT Version : :4.0 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.