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Add intrinsics.count_zeros

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gingerBill
2021-04-25 20:50:25 +01:00
parent 4662bad59c
commit 2691c394e0
5 changed files with 23 additions and 64 deletions
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core/math/bits/bits.odin
+9 -64
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@@ -24,68 +24,18 @@ I32_MAX :: 1 << 31 - 1;
I64_MAX :: 1 << 63 - 1;
count_ones :: intrinsics.count_ones;
trailing_zeros :: intrinsics.count_trailing_zeros;
leading_zeros :: intrinsics.count_leading_zeros;
count_ones :: intrinsics.count_ones;
count_zeros :: intrinsics.count_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;
reverse_bits :: intrinsics.reverse_bits;
byte_swap :: intrinsics.byte_swap;
byte_swap_u16 :: proc(x: u16) -> u16 {
return runtime.bswap_16(x);
}
byte_swap_u32 :: proc(x: u32) -> u32 {
return runtime.bswap_32(x);
}
byte_swap_u64 :: proc(x: u64) -> u64 {
return runtime.bswap_64(x);
}
byte_swap_i16 :: proc(x: i16) -> i16 {
return i16(runtime.bswap_16(u16(x)));
}
byte_swap_i32 :: proc(x: i32) -> i32 {
return i32(runtime.bswap_32(u32(x)));
}
byte_swap_i64 :: proc(x: i64) -> i64 {
return i64(runtime.bswap_64(u64(x)));
}
byte_swap_u128 :: proc(x: u128) -> u128 {
return runtime.bswap_128(x);
}
byte_swap_i128 :: proc(x: i128) -> i128 {
return i128(runtime.bswap_128(u128(x)));
}
byte_swap_uint :: proc(i: uint) -> uint {
when size_of(uint) == size_of(u32) {
return uint(byte_swap_u32(u32(i)));
} else {
return uint(byte_swap_u64(u64(i)));
}
}
byte_swap_int :: proc(i: int) -> int {
when size_of(int) == size_of(i32) {
return int(byte_swap_i32(i32(i)));
} else {
return int(byte_swap_i64(i64(i)));
}
}
count_zeros8 :: proc(i: u8) -> u8 { return 8 - count_ones(i); }
count_zeros16 :: proc(i: u16) -> u16 { return 16 - count_ones(i); }
count_zeros32 :: proc(i: u32) -> u32 { return 32 - count_ones(i); }
count_zeros64 :: proc(i: u64) -> u64 { return 64 - count_ones(i); }
count_zeros :: proc{
count_zeros8,
count_zeros16,
count_zeros32,
count_zeros64,
};
overflowing_add :: intrinsics.overflow_add;
overflowing_sub :: intrinsics.overflow_sub;
overflowing_mul :: intrinsics.overflow_mul;
rotate_left8 :: proc(x: u8, k: int) -> u8 {
@@ -142,11 +92,6 @@ to_le_uint :: proc(i: uint) -> uint { when ODIN_ENDIAN == "little" { return i; }
overflowing_add :: intrinsics.overflow_add;
overflowing_sub :: intrinsics.overflow_sub;
overflowing_mul :: intrinsics.overflow_mul;
len_u8 :: proc(x: u8) -> int {
return int(len_u8_table[x]);
}