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12A. float values
REALs (or FLOATs, whatever) are very different in E than in other
languages. This mainly has to do with the fact that E doesn't
really discriminate between types of values. One is advised to
understand these chapters _well_ before attempting to use floats.
In E, a float is just another 32bit value. The E compiler treats
them just like integers or pointers, with the difference that
their bit representation means something different. The E float
format is the IEEEsingle standard.
A float value looks like an integer value with the exception that
somewhere a "." is present. for example, the following are valid
3.14159 .1 1. -12345.6
(i.e. atleast one "." and one "0-9" char must be present).
You can use these values at almost all places where LONG values
are legal, i.e. if you have have a function or datastructure that
handles arbitrary LONG values, it will also handle floats.