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common/fp/util: Make ProcessNaN utility functions constexpr

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Nothing in particular prevents these from being constexpr. Do so to make
them consistent with the bulk of other functions in this header that are
constexpr.
This commit is contained in:
Lioncash 2019-05-04 21:20:39 -04:00
parent 4cfd1f28cc
commit 3991361352
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GPG Key ID: 4E3C3CC1031BA9C7
1 changed files with 3 additions and 3 deletions
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6
src/common/fp/util.h
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@ -53,7 +53,7 @@ constexpr bool IsNaN(FPT value) {
/// Given a single argument, return the NaN value which would be returned by an ARM processor.
/// If the argument isn't a NaN, returns std::nullopt.
template<typename FPT>
inline std::optional<FPT> ProcessNaNs(FPT a) {
constexpr std::optional<FPT> ProcessNaNs(FPT a) {
if (IsSNaN(a)) {
return a | FPInfo<FPT>::mantissa_msb;
} else if (IsQNaN(a)) {
@ -65,7 +65,7 @@ inline std::optional<FPT> ProcessNaNs(FPT a) {
/// Given a pair of arguments, return the NaN value which would be returned by an ARM processor.
/// If neither argument is a NaN, returns std::nullopt.
template<typename FPT>
inline std::optional<FPT> ProcessNaNs(FPT a, FPT b) {
constexpr std::optional<FPT> ProcessNaNs(FPT a, FPT b) {
if (IsSNaN(a)) {
return a | FPInfo<FPT>::mantissa_msb;
} else if (IsSNaN(b)) {
@ -81,7 +81,7 @@ inline std::optional<FPT> ProcessNaNs(FPT a, FPT b) {
/// Given three arguments, return the NaN value which would be returned by an ARM processor.
/// If none of the arguments is a NaN, returns std::nullopt.
template<typename FPT>
inline std::optional<FPT> ProcessNaNs(FPT a, FPT b, FPT c) {
constexpr std::optional<FPT> ProcessNaNs(FPT a, FPT b, FPT c) {
if (IsSNaN(a)) {
return a | FPInfo<FPT>::mantissa_msb;
} else if (IsSNaN(b)) {