diff options
Diffstat (limited to 'absl/strings/internal/str_format/float_conversion.cc')
| -rw-r--r-- | absl/strings/internal/str_format/float_conversion.cc | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/absl/strings/internal/str_format/float_conversion.cc b/absl/strings/internal/str_format/float_conversion.cc index 2b1fd8cb..b1c40684 100644 --- a/absl/strings/internal/str_format/float_conversion.cc +++ b/absl/strings/internal/str_format/float_conversion.cc @@ -29,6 +29,7 @@ #include "absl/meta/type_traits.h" #include "absl/numeric/bits.h" #include "absl/numeric/int128.h" +#include "absl/numeric/internal/representation.h" #include "absl/strings/numbers.h" #include "absl/types/optional.h" #include "absl/types/span.h" @@ -39,6 +40,8 @@ namespace str_format_internal { namespace { +using ::absl::numeric_internal::IsDoubleDouble; + // The code below wants to avoid heap allocations. // To do so it needs to allocate memory on the stack. // `StackArray` will allocate memory on the stack in the form of a uint32_t @@ -112,13 +115,6 @@ inline uint64_t DivideBy10WithCarry(uint64_t *v, uint64_t carry) { return next_carry % divisor; } -constexpr bool IsDoubleDouble() { - // This is the `double-double` representation of `long double`. - // We do not handle it natively. Fallback to snprintf. - return std::numeric_limits<long double>::digits == - 2 * std::numeric_limits<double>::digits; -} - using MaxFloatType = typename std::conditional<IsDoubleDouble(), double, long double>::type; @@ -1404,6 +1400,8 @@ bool FloatToSink(const Float v, const FormatConversionSpecImpl &conv, bool ConvertFloatImpl(long double v, const FormatConversionSpecImpl &conv, FormatSinkImpl *sink) { if (IsDoubleDouble()) { + // This is the `double-double` representation of `long double`. We do not + // handle it natively. Fallback to snprintf. return FallbackToSnprintf(v, conv, sink); } |