Files
wren/test/core/number/fraction.wren
Bob Nystrom 58e4d26648 "IO" -> "System".
Get rid of the separate opt-in IO class and replace it with a core
System class.

- Remove wren_io.c, wren_io.h, and io.wren.
- Remove the flags that disable it.
- Remove the overloads for print() with different arity. (It was an
  experiment, but I don't think it's that useful.)
- Remove IO.read(). That will reappear using libuv in the CLI at some
  point.
- Remove IO.time. Doesn't seem to have been used.
- Update all of the tests, docs, etc.

I'm sorry for all the breakage this causes, but I think "System" is a
better name for this class (it makes it natural to add things like
"System.gc()") and frees up "IO" for referring to the CLI's IO module.
2015-09-15 07:46:09 -07:00

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System.print(123.fraction) // expect: 0
System.print((-123).fraction) // expect: -0
System.print(0.fraction) // expect: 0
System.print((-0).fraction) // expect: -0
System.print(0.123.fraction) // expect: 0.123
System.print(12.3.fraction) // expect: 0.3
System.print((-0.123).fraction) // expect: -0.123
System.print((-12.3).fraction) // expect: -0.3
// Using 32-bit representation, a longer mantissa will lead to
// approximation.
System.print((1.23456789012345).fraction) // expect: 0.23456789012345
System.print((-1.23456789012345).fraction) // expect: -0.23456789012345
System.print((0.000000000000000000000000000000000000000001).fraction) // expect: 1e-42
System.print((-0.000000000000000000000000000000000000000001).fraction) // expect: -1e-42
System.print((1.000000000000000000000000000000000000000001).fraction) // expect: 0
System.print((-1.000000000000000000000000000000000000000001).fraction) // expect: -0