52 lines
1.5 KiB
Python
52 lines
1.5 KiB
Python
# Tests domain errors in math functions
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try:
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import math
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except ImportError:
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print("SKIP")
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raise SystemExit
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inf = float("inf")
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nan = float("nan")
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# single argument functions
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for name, f, args in (
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("fabs", math.fabs, ()),
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("ceil", math.ceil, ()),
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("floor", math.floor, ()),
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("trunc", math.trunc, ()),
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("sqrt", math.sqrt, (-1, 0)),
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("exp", math.exp, ()),
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("sin", math.sin, ()),
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("cos", math.cos, ()),
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("tan", math.tan, ()),
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("asin", math.asin, (-1.1, 1, 1.1)),
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("acos", math.acos, (-1.1, 1, 1.1)),
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("atan", math.atan, ()),
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("ldexp", lambda x: math.ldexp(x, 0), ()),
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("radians", math.radians, ()),
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("degrees", math.degrees, ()),
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):
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for x in args + (inf, nan):
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try:
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ans = f(x)
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print("%.4f" % ans)
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except ValueError:
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print(name, "ValueError")
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except OverflowError:
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print(name, "OverflowError")
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# double argument functions
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for name, f, args in (
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("pow", math.pow, ((0, 2), (-1, 2), (0, -1), (-1, 2.3), (nan, 0), (1, nan))),
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("fmod", math.fmod, ((1.2, inf), (1.2, -inf), (1.2, 0), (inf, 1.2))),
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("atan2", math.atan2, ((0, 0), (-inf, inf), (-inf, -inf), (inf, -inf))),
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("copysign", math.copysign, ()),
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):
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for x in args + ((0, inf), (inf, 0), (inf, inf), (inf, nan), (nan, inf), (nan, nan)):
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try:
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ans = f(*x)
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print("%.4f" % ans)
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except ValueError:
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print(name, "ValueError")
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