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use FMT_ENABLE_IF for compile-time if branching

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This commit is contained in:
Walter Gray 2020-11-13 15:55:46 -08:00
parent eefa1e5b1b
commit 93f1e22a7e
1 changed files with 10 additions and 7 deletions
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17
include/fmt/chrono.h
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@ -762,17 +762,20 @@ inline std::chrono::duration<Rep, std::milli> get_milliseconds(
return std::chrono::duration<Rep, std::milli>(static_cast<Rep>(ms));
}
template <typename Char, typename Rep, typename OutputIt>
template <typename Char, typename Rep, typename OutputIt,
FMT_ENABLE_IF(std::is_integral<Rep>::value)>
OutputIt format_duration_value(OutputIt out, Rep val, int precision) {
static FMT_CONSTEXPR_DECL const Char format[] = {'{', '}', 0};
return format_to(out, FMT_STRING(format), val);
}
template <typename Char, typename Rep, typename OutputIt,
FMT_ENABLE_IF(std::is_floating_point<Rep>::value)>
OutputIt format_duration_value(OutputIt out, Rep val, int precision) {
static FMT_CONSTEXPR_DECL const Char pr_f[] = {'{', ':', '.', '{', '}', 'f', '}', 0};
if (precision >= 0) return format_to(out, FMT_STRING(pr_f), val, precision);
static FMT_CONSTEXPR_DECL const Char fp_f[] = {'{', ':', 'g', '}', 0};
static FMT_CONSTEXPR_DECL const Char format[] = {'{', '}', 0};
if(std::is_floating_point<Rep>::value) {
return format_to(out, FMT_STRING(fp_f), val);
} else {
return format_to(out, FMT_STRING(format), val);
}
return format_to(out, FMT_STRING(fp_f), val);
}
template <typename Char, typename OutputIt>