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10.3 IEEE modules: IEEE_EXCEPTIONS, IEEE_ARITHMETIC, and IEEE_FEATURES

Standard:

Fortran 2003 and later

The IEEE_EXCEPTIONS, IEEE_ARITHMETIC, and IEEE_FEATURES intrinsic modules provide support for exceptions and IEEE arithmetic, as defined in Fortran 2003 and later standards, and the IEC 60559:1989 standard (Binary floating-point arithmetic for microprocessor systems). These modules are only provided on the following supported platforms:

  • i386 and x86_64 processors
  • platforms which use the GNU C Library (glibc)
  • platforms with support for SysV/386 routines for floating point interface (including Solaris and BSDs)
  • platforms with the AIX OS

For full compliance with the Fortran standards, code using the IEEE_EXCEPTIONS or IEEE_ARITHMETIC modules should be compiled with the following options: -fno-unsafe-math-optimizations -frounding-math -fsignaling-nans.

© Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-7.1.0/gfortran/IEEE-modules.html