Jeff Epler
b283885de6
also, for the common part, ensure that desktop Python's own decimal implementation is used. "print(+c.flags[Foo])" is because udecimal returns 0/1 for these, while Python's decimal returns False/True.
105 lines
2.8 KiB
Python
105 lines
2.8 KiB
Python
# SPDX-FileCopyrightText: 2020 Jeff Epler <https://unpythonic.net>
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#
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# SPDX-License-Identifier: Unlicense
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# pylint: disable=redefined-builtin,wildcard-import,wrong-import-position,unused-wildcard-import,unused-import,broad-except,undefined-variable,used-before-assignment
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try:
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from decimal import (
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Decimal,
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getcontext,
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setcontext,
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ExtendedContext,
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DivisionByZero,
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InvalidOperation,
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Context,
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localcontext,
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)
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except ImportError:
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from jepler_udecimal import (
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Decimal,
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getcontext,
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setcontext,
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ExtendedContext,
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DivisionByZero,
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InvalidOperation,
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Context,
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localcontext,
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)
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with localcontext():
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setcontext(ExtendedContext)
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print(Decimal(0))
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print(Decimal("1"))
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print(Decimal("-.0123"))
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print(Decimal(123456))
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print(Decimal("123.45e12345678"))
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print(Decimal("1.33") + Decimal("1.27"))
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print(Decimal("12.34") + Decimal("3.87") - Decimal("18.41"))
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dig = Decimal(1)
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print(dig / Decimal(3))
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getcontext().prec = 18
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print(dig / Decimal(3))
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print(dig.sqrt())
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print(Decimal(3).sqrt())
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print(Decimal(3) ** 123)
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inf = Decimal(1) / Decimal(0)
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print(inf)
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neginf = Decimal(-1) / Decimal(0)
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print(neginf)
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print(neginf + inf)
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print(neginf * inf)
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try:
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print(dig / 0)
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except Exception as e:
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print("Division by zero")
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getcontext().traps[DivisionByZero] = 1
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try:
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print(dig / 0)
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except Exception as e:
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print("Division by zero")
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c = Context()
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c.traps[InvalidOperation] = 0
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print(+c.flags[InvalidOperation])
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try:
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c.divide(Decimal(0), Decimal(0))
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except Exception as e:
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print("Division by zero")
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c.traps[InvalidOperation] = 1
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print(+c.flags[InvalidOperation])
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c.flags[InvalidOperation] = 0
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print(+c.flags[InvalidOperation])
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try:
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print(c.divide(Decimal(0), Decimal(0)))
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except Exception as e:
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print("Division by zero")
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print(+c.flags[InvalidOperation])
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try:
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print(c.divide(Decimal(0), Decimal(0)))
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except Exception as e:
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print("Division by zero")
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print(+c.flags[InvalidOperation])
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import jepler_udecimal.utrig
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from jepler_udecimal import Decimal
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print(Decimal(".7").atan())
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print(Decimal(".1").acos())
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print(Decimal("-.1").asin())
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print(Decimal(".4").tan())
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print(Decimal(".5").cos())
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print(Decimal(".6").sin())
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print(Decimal("0").sin())
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print(Decimal("360").sin())
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print(Decimal("360e19").sin())
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print(Decimal("NaN").cos())
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print(Decimal("NaN").tan())
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print(Decimal("NaN").sin())
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try:
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print(Decimal("2").acos())
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except Exception as e:
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print("exception")
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try:
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print(Decimal("2").asin())
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except Exception as e:
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print("exception")
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print(Decimal("2").atan())
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