| 1 | // FLAG macro in harfbuzz. |
| 2 | #[inline ] |
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| 3 | pub const fn rb_flag(x: u32) -> u32 { |
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| 4 | 1 << x |
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| 5 | } |
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| 6 | |
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| 7 | // FLAG_UNSAFE macro in harfbuzz. |
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| 8 | #[inline ] |
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| 9 | pub fn rb_flag_unsafe(x: u32) -> u32 { |
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| 10 | if x < 32 { |
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| 11 | 1 << x |
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| 12 | } else { |
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| 13 | 0 |
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| 14 | } |
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| 15 | } |
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| 16 | |
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| 17 | // FLAG_RANGE macro in harfbuzz. |
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| 18 | #[inline ] |
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| 19 | pub fn rb_flag_range(x: u32, y: u32) -> u32 { |
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| 20 | (x < y) as u32 + rb_flag(y + 1) - rb_flag(x) |
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| 21 | } |
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| 22 | |
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| 23 | // FLAG64 macro in harfbuzz. |
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| 24 | #[inline ] |
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| 25 | pub const fn rb_flag64(x: u32) -> u64 { |
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| 26 | 1 << x as u64 |
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| 27 | } |
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| 28 | |
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| 29 | // FLAG64_UNSAFE macro in harfbuzz. |
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| 30 | #[inline ] |
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| 31 | pub fn rb_flag64_unsafe(x: u32) -> u64 { |
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| 32 | if x < 64 { |
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| 33 | 1 << (x as u64) |
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| 34 | } else { |
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| 35 | 0 |
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| 36 | } |
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| 37 | } |
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| 38 | |
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