From 74f5902b045d582af36bf26a7a27d5e334a3f653 Mon Sep 17 00:00:00 2001 From: Mark Dickinson Date: Wed, 4 Aug 2010 18:42:43 +0000 Subject: Issue #9498: Add reference to sys.float_info from 'numeric types' docs. Thanks Yitz Gale. --- Doc/library/stdtypes.rst | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst index 5f1b732..76921cd 100644 --- a/Doc/library/stdtypes.rst +++ b/Doc/library/stdtypes.rst @@ -217,14 +217,15 @@ Numeric Types --- :class:`int`, :class:`float`, :class:`complex` There are three distinct numeric types: :dfn:`integers`, :dfn:`floating point numbers`, and :dfn:`complex numbers`. In addition, Booleans are a subtype of integers. Integers have unlimited precision. Floating point -numbers are implemented using :ctype:`double` in C---all bets on their -precision are off unless you happen to know the machine you are working -with. Complex numbers have a real and imaginary part, which are each -implemented using :ctype:`double` in C. To extract these parts from a -complex number *z*, use ``z.real`` and ``z.imag``. (The standard library -includes additional numeric types, :mod:`fractions` that hold rationals, -and :mod:`decimal` that hold floating-point numbers with user-definable -precision.) +numbers are usually implemented using :ctype:`double` in C; information +about the precision and internal representation of floating point +numbers for the machine on which your program is running is available +in :data:`sys.float_info`. Complex numbers have a real and imaginary +part, which are each a floating point number. To extract these parts +from a complex number *z*, use ``z.real`` and ``z.imag``. (The standard +library includes additional numeric types, :mod:`fractions` that hold +rationals, and :mod:`decimal` that hold floating-point numbers with +user-definable precision.) .. index:: pair: numeric; literals -- cgit v0.12