IntelÂ® Fortran Libraries Reference

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2 Intel Fortran Libraries ReferenceNOTE. If you use QSORT with different data types, your program must have aUSE IFPORT statement so that all the calls work correctly. In addition, if youwish to use QSORT with a derived type or a type that is not in the predefinedinterfaces, you must include an overload for the generic subroutine QSORT.Examples of how to do this are in the portability module’s source file,IFPORT.F90.CompatibilityCONSOLE STANDARD GRAPHICS QUICKWIN GRAPHICS WINDOWS DLL LIBExampleRAISEQQPROGRAM SORTQUSE IFPORTinteger(2), external :: cmp_functioninteger(2) insort(26), iinteger (SIZEOF_SIZE_T) array_len, array_sizearray_len = 26array_size = 2do i=90,65,-1insort(i-64)=91 - iend doprint *, "Before: "print *,insortCALL qsort(insort,array_len,array_size,cmp_function)print *, 'After: 'print *, insortEND!integer(2) function cmp_function(a1, a2)integer(2) a1, a2cmp_function=a1-a2end functionPortability Function: Sends a signal to the executing program.2-364
Descriptions of the Library Routines 2Module: USE IFPORTSyntaxresult = RAISEQQ (sig)sig(Input) INTEGER(4). Signal to raise. One of the following constants (defined in IFPORT.F90):• SIG$ABORT – Abnormal termination• SIG$FPE – Floating-point error• SIG$ILL – Illegal instruction• SIG$INT – CTRL+C signal• SIG$SEGV – Illegal storage access• SIG$TERM -– Termination requestIf you do not install a signal handler (with SIGNALQQ, for example), when a signal occurs thesystem by default terminates the program with exit code 3.Results:The result type is INTEGER(4). The result is zero if successful; otherwise, nonzero.If a signal-handling routine for sig has been installed by a prior call to SIGNALQQ, RAISEQQcauses that routine to be executed. If no handler routine has been installed, the system terminatesthe program (the default action).CompatibilityCONSOLE STANDARD GRAPHICS QUICKWIN GRAPHICS WINDOWS DLL LIBSee Also: “SIGNALQQ”, “SIGNAL”, “KILL”ExampleSee the example in “SIGNALQQ”.RAND, RANDOMPortability Functions: Return real random numbers in the range 0.0 through 1.0.Module: USE IFPORTSyntaxresult = RAND ([iflag])result = RANDOM (iflag)iflag(Input) INTEGER(4). Optional for RAND. Controls the way the random number is selected.2-365
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