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[SVN r71404]
This commit is contained in:
Paul A. Bristow
2011-04-21 17:53:58 +00:00
parent 8b7ef22cc9
commit 15c9b19ac1
1 changed files with 15 additions and 12 deletions
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27
include/boost/math/special_functions/nonfinite_num_facets.hpp
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@@ -43,12 +43,12 @@ namespace boost {
const int signed_zero = 0x2; //!< put facet will distinguish between positive and negative zero.
const int trap_infinity = 0x4; /*!< put facet will throw an exception of type std::ios_base::failure
when an attempt is made to format positive or negative infinity.
get will set the fail bit of the stream when an attempt is made
get will set the fail bit of the stream when an attempt is made
to parse a string that represents positive or negative sign infinity.
*/
const int trap_nan = 0x8; /*!< put facet will throw an exception of type std::ios_base::failure
when an attempt is made to format positive or negative NaN.
get will set the fail bit of the stream when an attempt is made
get will set the fail bit of the stream when an attempt is made
to parse a string that represents positive or negative sign infinity.
*/
@@ -195,7 +195,7 @@ namespace boost {
explicit nonfinite_num_get(int flags = 0) : flags_(flags)
{}
protected:
protected: // float, double and long double versions of do_get.
virtual InputIterator do_get(
InputIterator it, InputIterator end, std::ios_base& iosb,
std::ios_base::iostate& state, float& val) const
@@ -276,7 +276,8 @@ namespace boost {
} // void get_signed
template<class ValType> void get_unsigned
( // get an unsigned value into val
( //! Get an unsigned floating-point value into val,
//! but checking for letters indicating non-finites.
InputIterator& it, InputIterator end, std::ios_base& iosb,
const std::ctype<CharType>& ct,
std::ios_base::iostate& state, ValType& val
@@ -297,7 +298,7 @@ namespace boost {
get_q(it, end, ct, state, val);
break;
default:
default: // Got a normal floating-point value into val.
it = std::num_get<CharType, InputIterator>::do_get(
it, end, iosb, state, val);
if((flags_ & legacy) && val == static_cast<ValType>(1)
@@ -346,7 +347,7 @@ namespace boost {
} // void get_i
template<class ValType> void get_n
( // Get expected strings after 'n', "nan", "nanq", "nans", "nan(...)"
( // Get expected strings after 'n', "nan", "nanq", "nans", "nan(...)"
InputIterator& it, InputIterator end, const std::ctype<CharType>& ct,
std::ios_base::iostate& state, ValType& val
) const
@@ -384,7 +385,7 @@ namespace boost {
return;
}
++it;
break; // "nan(...)"
break; // "nan(...)"
}
default:
@@ -500,7 +501,7 @@ namespace boost {
//..........................................................................
char peek_char
( // Return next char (from input buffer).
( //! \return next char in the input buffer, ensuring lowercase (but do not 'consume' char).
InputIterator& it, InputIterator end,
const std::ctype<CharType>& ct
) const
@@ -510,7 +511,9 @@ namespace boost {
}
bool match_string
( // Match remaining chars to expected string (case insensitive).
( //! Match remaining chars to expected string (case insensitive),
//! consuming chars that match OK.
//! \return true if matched expected string, else false.
InputIterator& it, InputIterator end,
const std::ctype<CharType>& ct,
const char* s
@@ -519,14 +522,14 @@ namespace boost {
while(it != end && *s && *s == ct.narrow(ct.tolower(*it), 0))
{
++s;
++it;
++it; //
}
return !*s;
} // char peek_char
} // bool match_string
private:
const int flags_;
}; //
}; //
//------------------------------------------------------------------------------