---

9.3 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.