mrm%puffin@Sun.COM (Marianne Mueller) (08/16/89)
isinf() and the other functions recommended by the IEEE standard for floating point arithmetic are implemented on Suns in inline templates for the math library. (/usr/lib/libm.il, etc.) You can get the hex patterns for IEEE values from these text files. A good reference for the IEEE standard is the special issue of IEEE Computer, Vol 13, No 1, Jan 1980, which has a number of interesting & helpful articles, as well as the text of an early draft of the standard. I suppose any further discussion of IEEE & libm functions shouldn't take place in gnu.gcc!