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FIx #5689 (issue from 5th comment)

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[SVN r77039]
This commit is contained in:
Antony Polukhin
2012-02-16 17:56:27 +00:00
parent 04f441e989
commit 646b958a92
1 changed files with 12 additions and 3 deletions
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15
include/boost/lexical_cast.hpp
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@@ -732,6 +732,15 @@ namespace boost
namespace detail namespace detail
{ {
template <class CharT>
bool lc_iequal(const CharT* val, const CharT* lcase, const CharT* ucase, unsigned int len) {
for( unsigned int i=0; i < len; ++i ) {
if ( val[i] != lcase[i] && val[i] != ucase[i] ) return false;
}
return true;
}
/* Returns true and sets the correct value if found NaN or Inf. */ /* Returns true and sets the correct value if found NaN or Inf. */
template <class CharT, class T> template <class CharT, class T>
inline bool parse_inf_nan_impl(const CharT* begin, const CharT* end, T& value inline bool parse_inf_nan_impl(const CharT* begin, const CharT* end, T& value
@@ -755,7 +764,7 @@ namespace boost
else if( *begin == plus ) ++begin; else if( *begin == plus ) ++begin;
if( end-begin < 3 ) return false; if( end-begin < 3 ) return false;
if( !memcmp(begin, lc_nan, 3*sizeof(CharT)) || !memcmp(begin, lc_NAN, 3*sizeof(CharT)) ) if( lc_iequal(begin, lc_nan, lc_NAN, 3) )
{ {
begin += 3; begin += 3;
if (end != begin) /* It is 'nan(...)' or some bad input*/ if (end != begin) /* It is 'nan(...)' or some bad input*/
@@ -772,13 +781,13 @@ namespace boost
if (( /* 'INF' or 'inf' */ if (( /* 'INF' or 'inf' */
end-begin==3 end-begin==3
&& &&
(!memcmp(begin, lc_infinity, 3*sizeof(CharT)) || !memcmp(begin, lc_INFINITY, 3*sizeof(CharT))) lc_iequal(begin, lc_infinity, lc_INFINITY, 3)
) )
|| ||
( /* 'INFINITY' or 'infinity' */ ( /* 'INFINITY' or 'infinity' */
end-begin==inifinity_size end-begin==inifinity_size
&& &&
(!memcmp(begin, lc_infinity, inifinity_size)|| !memcmp(begin, lc_INFINITY, inifinity_size)) lc_iequal(begin, lc_infinity, lc_INFINITY, inifinity_size)
) )
) )
{ {