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| author | Bruce Hill <bruce@bruce-hill.com> | 2025-06-26 13:06:47 -0400 |
|---|---|---|
| committer | Bruce Hill <bruce@bruce-hill.com> | 2025-06-26 13:06:47 -0400 |
| commit | 8a4d5dc57b14e7c947c25970bb4d4f4ef91450f4 (patch) | |
| tree | e36042760c7c22d5a08777939484c06830d73404 /src/stdlib/bytes.c | |
| parent | c2653404944dbd5a6f737877f0bad6fd1de018f1 (diff) | |
Add get_bit() method for Ints and Bytes
Diffstat (limited to 'src/stdlib/bytes.c')
| -rw-r--r-- | src/stdlib/bytes.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/stdlib/bytes.c b/src/stdlib/bytes.c index b5c10aa2..48c8b93b 100644 --- a/src/stdlib/bytes.c +++ b/src/stdlib/bytes.c @@ -49,6 +49,14 @@ public Text_t Byte$hex(Byte_t byte, bool uppercase, bool prefix) { return text; } +public bool Byte$get_bit(Byte_t x, Int_t bit_index) { + if (Int$compare_value(bit_index, I(1)) < 0) + fail("Invalid bit index (expected 1 or higher): ", bit_index); + if (Int$compare_value(bit_index, I(8)) > 0) + fail("Bit index is too large! There are only 8 bits in a byte, but index is: ", bit_index); + return ((x & (Byte_t)(1L << (Int64$from_int(bit_index, true)-1L))) != 0); +} + #ifdef __TINYC__ #define __builtin_add_overflow(x, y, result) ({ *(result) = (x) + (y); false; }) #endif |