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author Karl Berry <karl@freefriends.org>
date Fri, 16 Aug 2013 06:32:22 -0700
parents e542fd46ad6f
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1 @c Documentation of gnulib module 'c-strtod'.
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2
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3 @c Copyright (C) 2008-2013 Free Software Foundation, Inc.
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4
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5 @c Permission is granted to copy, distribute and/or modify this document
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6 @c under the terms of the GNU Free Documentation License, Version 1.3 or
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7 @c any later version published by the Free Software Foundation; with no
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8 @c Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
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9 @c Texts. A copy of the license is included in the ``GNU Free
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10 @c Documentation License'' file as part of this distribution.
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11
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12 The @code{c-strtod} module contains a string to number (@samp{double})
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13 conversion function operating on single-byte character strings, that operates
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14 as if the locale encoding was ASCII.
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15 (The "C" locale on many systems has the locale encoding "ASCII".)
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16
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17 The function is:
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18 @smallexample
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19 extern double c_strtod (const char *string, char **endp);
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20 @end smallexample
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21
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22 In particular, only a period @samp{.} is accepted as decimal point, even
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23 when the current locale's notion of decimal point is a comma @samp{,},
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24 and no characters outside the basic character set are accepted.
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25
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26 On platforms without @code{strtod_l}, this function is not safe for use in
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27 multi-threaded applications since it calls @code{setlocale}.