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Rewrite doxy for av_strtod().

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Originally committed as revision 19268 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2009-06-24 22:35:11 +00:00
parent c1c206b343
commit d171a651db
1 changed files with 16 additions and 3 deletions
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19
libavcodec/eval.h
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@ -74,9 +74,22 @@ AVEvalExpr * ff_parse(const char *s, const char * const *const_name,
double ff_parse_eval(AVEvalExpr * e, const double *const_value, void *opaque);
void ff_eval_free(AVEvalExpr * e);
/** strtod() function extended with 'k', 'M', 'G', 'ki', 'Mi', 'Gi' and 'B'
* postfixes. This allows using f.e. kB, MiB, G and B as a postfix. This
* function assumes that the unit of numbers is bits not bytes.
/**
* Parses the string in numstr and returns its value as a double. If
* the string is empty, contains only whitespaces, or does not contain
* an initial substring that has the expected syntax for a
* floating-point number, no conversion is performed. In this case,
* returns a value of zero and the value returned in tail is the value
* of numstr.
*
* @param numstr a string representing a number, may contain one of
* the International System number postfixes, for example 'K', 'M',
* 'G'. If 'i' is appended after the postfix, powers of 2 are used
* instead of powers of 10. The 'B' postfix multiplies the value for
* 8, and can be appended after another postfix or used alone. This
* allows using for example 'KB', 'MiB', 'G' and 'B' as postfix.
* @param tail if non-NULL puts here the pointer to the char next
* after the last parsed character
*/
double av_strtod(const char *numstr, char **tail);