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Add is_supported_floating_point constexpr function

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This commit is contained in:
Alberto Aguirre 2020-03-19 18:18:41 -05:00
parent c3c9a69ace
commit b7f240a0df
1 changed files with 10 additions and 9 deletions
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19
include/fmt/format.h
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@ -726,6 +726,13 @@ FMT_CONSTEXPR bool is_negative(T) {
return false; return false;
} }
template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
FMT_CONSTEXPR bool is_supported_floating_point(T) {
return (std::is_same<T, float>::value && FMT_USE_FLOAT) ||
(std::is_same<T, double>::value && FMT_USE_DOUBLE) ||
(std::is_same<T, long double>::value && FMT_USE_LONG_DOUBLE);
}
// Smallest of uint32_t, uint64_t, uint128_t that is large enough to // Smallest of uint32_t, uint64_t, uint128_t that is large enough to
// represent all values of T. // represent all values of T.
template <typename T> template <typename T>
@ -1687,10 +1694,7 @@ template <typename Range> class basic_writer {
template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
void write(T value, format_specs specs = {}) { void write(T value, format_specs specs = {}) {
if (const_check( if (const_check(!is_supported_floating_point(value))) {
(std::is_same<T, float>::value && !FMT_USE_FLOAT) ||
(std::is_same<T, double>::value && !FMT_USE_DOUBLE) ||
(std::is_same<T, long double>::value && !FMT_USE_LONG_DOUBLE))) {
return; return;
} }
float_specs fspecs = parse_float_type_spec(specs); float_specs fspecs = parse_float_type_spec(specs);
@ -1891,11 +1895,8 @@ class arg_formatter_base {
template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
iterator operator()(T value) { iterator operator()(T value) {
if (const_check( if (const_check(!is_supported_floating_point(value))) {
(std::is_same<T, float>::value && !FMT_USE_FLOAT) || FMT_ASSERT(false, "unsupported float argument type");
(std::is_same<T, double>::value && !FMT_USE_DOUBLE) ||
(std::is_same<T, long double>::value && !FMT_USE_LONG_DOUBLE))) {
FMT_ASSERT(false, "unsupported float argument");
return out(); return out();
} }
writer_.write(value, specs_ ? *specs_ : format_specs()); writer_.write(value, specs_ ? *specs_ : format_specs());