GFortran相当于ieee_exceptions [英] GFortran equivalent of ieee_exceptions

问题描述

我试图编写一个程序，该程序在执行无效操作时会停止，不管它如何与GFortran一起编译。使用ifort我可以这样做：

 使用ieee_exceptions 
 .... 
 logical :: halt 
 .... 
 call ieee_get_halting_mode（IEEE_USUAL，halt）
 call ieee_set_halting_mode（IEEE_USUAL，.True。）
 .... 
！ 
 .... 
 call ieee_set_halting_mode（IEEE_USUAL，halt）
  

GFortran是否有类似于ifort的 ieee_exceptions 的模块？或者更好的方法是停止停止模式，而不知道如何编译程序或将使用哪个编译器？ 解决方案

GFortran支持ieee_exceptions模块，就像GCC 5版本一样。

如果你坚持使用旧的GFortran版本，解决方法是在C / asm，获取/设置FP捕获状态寄存器并从Fortran中调用这些寄存器。

PS：GFortran确实有一个开关（-fpe-trap） FP例外情况，请参阅 http://gcc.gnu.org/onlinedocs/gfortran/ Debugging-Options.html 。但是，既然你明确地说过不管它是如何用gfortran编译的，我想你不想使用它。

I am trying to write a program that will stop whenever an invalid operation is performed, no matter how it is compiled with GFortran. With ifort I could do something like this:

use ieee_exceptions
....
logical      :: halt
....
call ieee_get_halting_mode(IEEE_USUAL,halt)
call ieee_set_halting_mode(IEEE_USUAL,.True.)
....
! Something that may stop the program
....
call ieee_set_halting_mode(IEEE_USUAL,halt)    

Does GFortran have a module similar to ifort's ieee_exceptions? Or even better is there a way of stopping the halting mode without knowing how the program will be compiled or which compiler will be used?

解决方案

GFortran supports the ieee_exceptions module as of the GCC 5 release.

If you're stuck on an older GFortran release, a workaround would be to implement functions in C/asm that get/set the FP trapping status register and call those from Fortran.

PS.: GFortran does have a switch (-fpe-trap) for globally enabling traps for FP exceptions, see http://gcc.gnu.org/onlinedocs/gfortran/Debugging-Options.html . But, since you explicitly said "no matter how it is compiled with gfortran", I guess you don't want to use that.

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