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Rename intrinsics to count_trailing_zeros and count_leading_zeros

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This commit is contained in:
gingerBill
2021-04-25 20:26:11 +01:00
parent 72aa0e6e38
commit 7086b49ae6
8 changed files with 27 additions and 48 deletions
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core/math/bits/bits.odin
+6 -27
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@@ -25,23 +25,14 @@ I64_MAX :: 1 << 63 - 1;
count_ones :: intrinsics.count_ones;
trailing_zeros :: intrinsics.trailing_zeros;
trailing_zeros :: intrinsics.count_trailing_zeros;
leading_zeros :: intrinsics.count_leading_zeros;
count_trailing_zeros :: intrinsics.count_trailing_zeros;
count_leading_zeros :: intrinsics.count_leading_zeros;
reverse_bits :: intrinsics.reverse_bits;
byte_swap :: intrinsics.byte_swap;
leading_zeros_u8 :: proc(i: u8) -> int {
return 8*size_of(i) - len_u8(i);
}
leading_zeros_u16 :: proc(i: u16) -> int {
return 8*size_of(i) - len_u16(i);
}
leading_zeros_u32 :: proc(i: u32) -> int {
return 8*size_of(i) - len_u32(i);
}
leading_zeros_u64 :: proc(i: u64) -> int {
return 8*size_of(i) - len_u64(i);
}
byte_swap_u16 :: proc(x: u16) -> u16 {
return runtime.bswap_16(x);
@@ -83,18 +74,6 @@ byte_swap_int :: proc(i: int) -> int {
}
}
byte_swap :: proc{
byte_swap_u16,
byte_swap_u32,
byte_swap_u64,
byte_swap_u128,
byte_swap_i16,
byte_swap_i32,
byte_swap_i64,
byte_swap_i128,
byte_swap_uint,
byte_swap_int,
};
count_zeros8 :: proc(i: u8) -> u8 { return 8 - count_ones(i); }
count_zeros16 :: proc(i: u16) -> u16 { return 16 - count_ones(i); }
@@ -324,7 +303,7 @@ div_u64 :: proc(hi, lo, y: u64) -> (quo, rem: u64) {
panic("overflow error");
}
s := uint(leading_zeros_u64(y));
s := uint(count_leading_zeros(y));
y <<= s;
yn1 := y >> 32;