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 Extended Precision x:  _ _ _ Num/Denom

 x: applies to real numbers and produces extended precision rational numbers. It applies to integers and produces extended integers. The implied comparison in x: is tolerant. The inverse x:^:_1 converts rationals, including extended integers, into finite precision numbers (floating point or integer). 1 x: y is the same as x: y ; and 2 x: y produces the two extended integers of the numerator and denominator of the argument. The inverse of k x: y is (-k)x: y ; that is, _1 x: y is the same as x:^:_1 y and _2 x: y is the same as %/"1 y .

```   x: 1.2
6r5

2 x: 1.2
6 5

x: 1.2 _1.2 0 0.07
6r5 _6r5 0 7r100

x: 3j4
|domain error
|       x:3j4

] pi =: o.1
3.14159

x: pi
1285290289249r409120605684

pi - 1285290289249%409120605684
1.49214e_13

x:!.0 pi
884279719003555r281474976710656

pi - 884279719003555%281474976710656
0

2 x: 1r2 3r4 5r6 _7r8
1 2
3 4
5 6
_7 8
```

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