mirror of
https://github.com/WerWolv/ImHex-Patterns.git
synced 2026-03-28 15:57:02 -05:00
4eff8460ba
* libstd: Initial standard library work bit operations, fixed point, numeric limits and math functions * libstd: Added ctype, rustint, stdint and string library, expand bit, fxpt and math library * patterns: Drastically improve ELF pattern * patterns: Added atmosphere AFE2 * patterns: tabs -> spaces * patterns: Added archive file pattern
35 lines
667 B
Plaintext
35 lines
667 B
Plaintext
namespace std::bit {
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fn popcount(u128 x) {
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x = (x & (std::limits::u128_max() / 3)) + ((x >> 1) & (std::limits::u128_max() / 3));
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x = (x & (std::limits::u128_max() / 5)) + ((x >> 2) & (std::limits::u128_max() / 5));
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x = (x & (std::limits::u128_max() / 17)) + ((x >> 4) & (std::limits::u128_max() / 17));
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return x % 0xFF;
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};
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fn has_single_bit(u128 x) {
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return x != 0 && (x & (x - 1)) == 0;
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};
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fn bit_ceil(u128 x) {
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if (x == 0) return 0;
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u8 i;
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while ((1 << i) < x)
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i = i + 1;
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return 1 << i;
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};
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fn bit_floor(u128 x) {
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if (x == 0) return 0;
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u8 i;
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while ((x >> i) > 0)
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i = i + 1;
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return 1 << (i - 1);
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};
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} |