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Optimize floating point formatting

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This commit is contained in:
Victor Zverovich
2020-10-09 10:23:10 -07:00
parent f6d75c534c
commit 3c13a88b14
2 changed files with 35 additions and 22 deletions
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5
include/fmt/format-inl.h
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@@ -2173,11 +2173,8 @@ FMT_SAFEBUFFERS decimal_fp<T> to_decimal(T x) FMT_NOEXCEPT {
const carrier_uint significand_mask =
(static_cast<carrier_uint>(1) << float_info<T>::significand_bits) - 1;
carrier_uint significand = (br & significand_mask);
const carrier_uint exponent_mask =
((static_cast<carrier_uint>(1) << float_info<T>::exponent_bits) - 1)
<< float_info<T>::significand_bits;
int exponent =
static_cast<int>((br & exponent_mask) >> float_info<T>::significand_bits);
static_cast<int>((br & exponent_mask<T>()) >> float_info<T>::significand_bits);
if (exponent != 0) { // Check if normal.
exponent += float_info<T>::exponent_bias - float_info<T>::significand_bits;