57 lines
2.0 KiB
C++
57 lines
2.0 KiB
C++
#ifndef __JABYENGINE_BITS_HPP__
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#define __JABYENGINE_BITS_HPP__
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#include "../jabyengine_defines.h"
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namespace JabyEngine {
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namespace bit {
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template<typename T>
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static constexpr T set(T raw_value, size_t bit) {
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return (raw_value | (1 << bit));
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}
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template<typename T>
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static constexpr T clear(T raw_value, size_t bit) {
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return (raw_value & ~(1 << bit));
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}
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template<typename T>
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static constexpr bool is_set(T raw_value, size_t bit) {
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return static_cast<bool>(raw_value & (1 << bit));
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}
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namespace value {
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template<typename T>
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static constexpr T crop_value(T raw_value, size_t length) {
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return (raw_value & ((1 << length) - 1));
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}
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template<typename T>
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static constexpr T range_mask(size_t start_bit, size_t length) {
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return (((1 << length) - 1) << start_bit);
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}
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template<typename T>
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static constexpr T clear_normalized(T raw_value, size_t start_bit, size_t length) {
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return (raw_value & ~range_mask<T>(start_bit, length));
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}
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template<typename T>
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static constexpr T set_normalized(T raw_value, T value, size_t start_bit, size_t length) {
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return (clear_normalized(raw_value, start_bit, length) | (crop_value(value, length) << start_bit));
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}
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template<typename T>
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static constexpr T get_normalized(T raw_value, size_t start_bit, size_t length) {
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return crop_value((raw_value & range_mask<T>(start_bit, length)) >> start_bit, length);
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}
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}
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template<typename S, typename T>
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static constexpr S cast(T value) {
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return *reinterpret_cast<S*>(&value);
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}
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}
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}
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#define __start_end_bit2_start_length(start_bit, end_bit) start_bit, (end_bit - start_bit + 1)
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#endif //!__JABYENGINE_BITS_HPP__
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