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Though a fully conforming implementation is free to create its own floating point system, there is a systems standard which garners overwhelming popularity in most systems, and another very which used to be popular in legacy many older systems. The most popular implementation, used by the default options of Microsoft Visual Studio and GCC on Intel architectures, is IEEE 754. The second, generally considered legacy, system is commonly known as the "IBM floating point representation," or sometimes as "IBM/370." Each of these systems have differing precisions and ranges of representable values. As a result, they do not represent all of the same values, are not binary compatible, and have differing associated error rates.
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\[[Gough 2005|AA. C References#Gough 2005]\] [Section 8.6, "Floating-point issues"|http://www.network-theory.co.uk/docs/gccintro/gccintro_70.html] \[[IEEE 754 2006|AA. C References#IEEE 754 2006]\] \[[ISO/IEC 9899:-1999|AA. C References#ISO/IEC 9899-1999]\] Section 5.2.4.2.2, "Characteristics of floating types {{<float.h>}}" |
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