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foption has two uses. Called without an argument, it sends a string to standard output which is the compiler floating-point option corresponding to the type of floating-point hardware that would be used by a program compiled with -fswitch. Exit status is undefined. This usage is intended for interactively determining available floating-point hardware. On systems without floating-point hardware, the result would be
example% foption soft
corresponding to the compiler option -fsoft.
Called with an argument which is one of the compiler floating-point options -ffpa, -f68881, -fsoft, or -fswitch, it produces no output but returns exit status 0 (true) if a program compiled with that option could execute on this machine, and status 1 (false) otherwise. Thus foption -fsoft and foption -fswitch always produce exit status 0. This usage is intended for shell scripts and Makefiles that, for instance, select different executable files or link with different libraries according to the floating-point hardware present.
foption is undefined on Sun-4 systems since there are no floating-point code generation options.
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Created by unroff & hp-tools. © somebody (See intro for details). All Rights Reserved. Last modified 11/5/97