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Move properties structs

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This commit is contained in:
Matt Borland
2023-03-14 08:15:43 -07:00
parent 1dfbb61945
commit 3d6ecf4c75
1 changed files with 40 additions and 0 deletions
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40
include/boost/charconv/detail/bit_layouts.hpp
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@@ -26,6 +26,26 @@ struct IEEEf2bits
#endif
};
struct ieee754_binary32
{
static constexpr int significand_bits = 23;
static constexpr int exponent_bits = 8;
static constexpr int min_exponent = -126;
static constexpr int max_exponent = 127;
static constexpr int exponent_bias = -127;
static constexpr int decimal_digits = 9;
};
#ifdef BOOST_NO_CXX17_INLINE_VARIABLES
// Definitions of in-class constexpr members are allowed but deprecated in C++17
constexpr int ieee754_binary32::significand_bits;
constexpr int ieee754_binary32::exponent_bits;
constexpr int ieee754_binary32::min_exponent;
constexpr int ieee754_binary32::max_exponent;
constexpr int ieee754_binary32::exponent_bias;
constexpr int ieee754_binary32::decimal_digits;
#endif
struct IEEEd2bits
{
#if BOOST_CHARCONV_ENDIAN_LITTLE_BYTE
@@ -41,6 +61,26 @@ struct IEEEd2bits
#endif
};
struct ieee754_binary64
{
static constexpr int significand_bits = 52;
static constexpr int exponent_bits = 11;
static constexpr int min_exponent = -1022;
static constexpr int max_exponent = 1023;
static constexpr int exponent_bias = -1023;
static constexpr int decimal_digits = 17;
};
#ifdef BOOST_NO_CXX17_INLINE_VARIABLES
// Definitions of in-class constexpr members are allowed but deprecated in C++17
constexpr int ieee754_binary64::significand_bits;
constexpr int ieee754_binary64::exponent_bits;
constexpr int ieee754_binary64::min_exponent;
constexpr int ieee754_binary64::max_exponent;
constexpr int ieee754_binary64::exponent_bias;
constexpr int ieee754_binary64::decimal_digits;
#endif
// 80 bit long double (e.g. x86-64)
#if LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384