bug#15140: number->string doesn't accept the optional precision argument

[Göran Weinholt]

Hello schemers,

the number->string procedure from (rnrs) should accept the optional
precision argument, but does not:

scheme@(guile-user)> (import (rnrs))
scheme@(guile-user)> (number->string 1.1 10 53)
;;; <stdin>:2:0: warning: possibly wrong number of arguments to `number->string'
ERROR: In procedure number->string:
ERROR: Wrong number of arguments to #<procedure number->string (_ #:optional _)>

The example should return "1.1|53".

Tested with GNU Guile 2.0.9.71-8d5d04.

-- 
Göran Weinholt <address@hidden>
"On your own and though you feel alone you are alive.
Don't you know it's just another day." -- You Are Alive, Fragma

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