hangshuo652
32 lines
907 B
Python
32 lines
907 B
Python
from dataclasses import dataclass
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from decimal import Decimal, InvalidOperation
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@dataclass
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class RoundingResult:
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mode: str = "EXACT"; confidence: float = 1.0; suggestion: str = ""
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def detect_rounding(c: str, j: str) -> RoundingResult:
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cv = _d(c)
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jv = _d(j)
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if cv is None or jv is None:
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return RoundingResult(mode="UNKNOWN", confidence=0, suggestion="parse error")
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if cv == jv:
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return RoundingResult()
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diff = abs(float(cv - jv))
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mag = max(abs(float(cv)), abs(float(jv)), 1)
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rel = diff / mag
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if diff < 2:
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return RoundingResult("TRUNCATE", 0.6, f"Likely TRUNCATE, diff={diff}")
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if diff < 100:
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return RoundingResult("ROUNDING", 0.4, f"Possible rounding, diff={diff}")
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return RoundingResult("SIGNIFICANT", 0.9, f"Significant diff={diff}")
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def _d(v):
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try:
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return Decimal(str(v).strip())
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except:
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return None
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