☜	Number Range 1995 Version of ANSI (Equivalent to Current ISO Version) of Standard					☞

2.6 Number range

All values used in arithmetic operations or in any context requiring a numeric interpretation are within the inclusive intervals [–10²⁵, –10^–25] or [10^–25, 10²⁵], or are zero.

Implementations shall represent numeric quantities with at least 15 significant digits. The error introduced by any single instance of the arithmetic operations of addition, subtraction, multiplication, division, integer division, or modulo shall not exceed one part in 10¹⁵. The error introduced by exponentiation shall not exceed one part in 10⁷.

Programmers should exercise caution in the use of noninteger arithmetic. In general, arithmetic operations on noninteger operands or arithmetic operations which produce noninteger results cannot be expected to be exact. In particular, noninteger arithmetic can yield unexpected results when used in loop control or arithmetic tests.

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