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allaun
475f6319ea
This squashes all local history (768 commits) onto the scrubbed PR #90 baseline. Individual commits were lost during filter-repo corruption; the working tree content is preserved intact. Build: N/A (working tree state only)
44 lines
904 B
Python
44 lines
904 B
Python
Q16_SCALE = 65536
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Q16_ONE = 0x00010000
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Q16_MIN = -32768
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Q16_MAX = 32767
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def q16_from_int(val: int) -> int:
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return val << 16
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def q16_to_float(val: int) -> float:
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return val / Q16_SCALE
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def q16_from_float(val: float) -> int:
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return max(Q16_MIN, min(Q16_MAX, int(val * Q16_SCALE)))
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def q16_from_ratio(num: int, den: int) -> int:
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return (num << 16) // den if den != 0 else 0
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def q16_add(a: int, b: int) -> int:
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return max(Q16_MIN, min(Q16_MAX, a + b))
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def q16_sub(a: int, b: int) -> int:
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return max(Q16_MIN, min(Q16_MAX, a - b))
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def q16_mul(a: int, b: int) -> int:
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return max(Q16_MIN, min(Q16_MAX, (a * b) >> 16))
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def q16_div(a: int, b: int) -> int:
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return max(Q16_MIN, min(Q16_MAX, ((a << 16) // b) if b != 0 else 0))
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def q16_neg(a: int) -> int:
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return max(Q16_MIN, min(Q16_MAX, -a))
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def q16_abs(a: int) -> int:
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return a if a >= 0 else q16_neg(a)
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