Opened 5 years ago

Closed 5 years ago

## #1418 closed defect (invalid)

# #e1e500 is not exact (numbers egg, possibly Chicken 5 as well)

Reported by: | johnwcowan | Owned by: | |
---|---|---|---|

Priority: | major | Milestone: | 5.0 |

Component: | unknown | Version: | 4.12.0 |

Keywords: | Cc: | ||

Estimated difficulty: |

### Description

Per R5RS and later standards, `#e1e500`

is the same as 10000000000000000000000000000000000000000000000000000000000000000000

00000000000000000000000000000000000000000000000000000000000000000000

00000000000000000000000000000000000000000000000000000000000000000000

00000000000000000000000000000000000000000000000000000000000000000000

00000000000000000000000000000000000000000000000000000000000000000000

00000000000000000000000000000000000000000000000000000000000000000000

00000000000000000000000000000000000000000000000000000000000000000000

0000000000000000000000000.

But this is not so in Chicken, which treats `#e`

the same as calling `inexact->exact`

, and so returns `+inf.0`

, which is neither exact nor correct. When `#e`

is present, the result needs to be computed by bignum/ratio arithmetic, even if what follows is a decimal fraction.

### Change History (2)

### comment:1 Changed 5 years ago by

### comment:2 Changed 5 years ago by

Resolution: | → invalid |
---|---|

Status: | new → closed |

As discussed on IRC, this was just an old version of numbers, fixed by reinstalling

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In CHICKEN 5 and in CHICKEN 4 with the numbers egg, I get 10000000000000000000000000000000000000000000000000000000000000000000

00000000000000000000000000000000000000000000000000000000000000000000

00000000000000000000000000000000000000000000000000000000000000000000

00000000000000000000000000000000000000000000000000000000000000000000

00000000000000000000000000000000000000000000000000000000000000000000

00000000000000000000000000000000000000000000000000000000000000000000

00000000000000000000000000000000000000000000000000000000000000000000

0000000000000000000000000

Without the numbers egg, it'll return +inf.0 of course...

How did you test this?