circuitpython/tests/float/math_domain_special.py

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# Tests domain errors in special math functions
try:
import math
math.erf
except (ImportError, AttributeError):
print("SKIP")
raise SystemExit
inf = float("inf")
nan = float("nan")
# single argument functions
for name, f, args in (
("expm1", math.exp, ()),
("log2", math.log2, (-1, 0)),
("log10", math.log10, (-1, 0)),
("sinh", math.sinh, ()),
("cosh", math.cosh, ()),
("tanh", math.tanh, ()),
("asinh", math.asinh, ()),
("acosh", math.acosh, (-1, 0.9, 1)),
("atanh", math.atanh, (-1, 1)),
("erf", math.erf, ()),
("erfc", math.erfc, ()),
("gamma", math.gamma, (-2, -1, 0, 1)),
("lgamma", math.lgamma, (-2, -1, 0, 1)),
):
for x in args + (inf, -inf, nan):
try:
ans = f(x)
print("%.4f" % ans)
except ValueError:
print(name, "ValueError")
except OverflowError:
print(name, "OverflowError")