circuitpython/tests/float/math_domain.py

52 lines
1.5 KiB
Python

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