87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
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// Copyright 2021 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SRC_TINT_NUMBER_H_
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#define SRC_TINT_NUMBER_H_
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#include <stdint.h>
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namespace tint {
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/// Number wraps a integer or floating point number, enforcing explicit casting.
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template <typename T>
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struct Number {
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/// Constructor. The value is zero-initialized.
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Number() = default;
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/// Constructor.
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/// @param v the value to initialize this Number to
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explicit Number(T v) : value(v) {}
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/// Conversion operator
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/// @returns the value as T
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operator T() const { return value; }
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/// Assignment operator
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/// @param v the new value
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/// @returns this Number so calls can be chained
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Number& operator=(T v) {
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value = v;
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return *this;
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}
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/// The number value
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T value = {};
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};
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template <typename A, typename B>
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bool operator==(Number<A> a, Number<B> b) {
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return a.value == b.value;
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}
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template <typename A, typename B>
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bool operator==(Number<A> a, B b) {
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return a.value == b;
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}
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template <typename A, typename B>
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bool operator==(A a, Number<B> b) {
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return a == b.value;
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}
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/// `i32` is a type alias to `Number<int32_t>`.
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using i32 = Number<int32_t>;
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/// `u32` is a type alias to `Number<uint32_t>`.
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using u32 = Number<uint32_t>;
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/// `f32` is a type alias to `float`
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using f32 = float;
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} // namespace tint
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namespace tint::number_suffixes {
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/// Literal suffix for i32 literals
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inline i32 operator"" _i(unsigned long long int value) { // NOLINT
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return i32(static_cast<int32_t>(value));
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}
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/// Literal suffix for u32 literals
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inline u32 operator"" _u(unsigned long long int value) { // NOLINT
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return u32(static_cast<uint32_t>(value));
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}
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} // namespace tint::number_suffixes
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#endif // SRC_TINT_NUMBER_H_
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