inexact integers in modulo etc

inexact integers in modulo etc

[Bill Schottstaedt]

I guess this is not news, but just in case... Some Guile numerical
primitives that should (could?) accept inexact integers (at least that's
the way I read r5rs) do not.  The remainder example below is taken
from r5rs:

guile> (version)
"1.7.0"
guile> (modulo 4.0 2)

Backtrace:
In standard input:
   2: 0* [modulo 4.0 2]

standard input:2:1: In procedure modulo in expression (modulo 4.0 2):
standard input:2:1: Wrong type argument in position 1: 4.0
ABORT: (wrong-type-arg)
guile> (remainder -13 -4.0)

Backtrace:
In standard input:
   1: 0* [remainder -13 -4.0]

standard input:1:1: In procedure remainder in expression (remainder -13 -4.0):
standard input:1:1: Wrong type argument in position 2: -4.0
ABORT: (wrong-type-arg)

Others are quotient, gcd, lcm, even?, odd?

_______________________________________________
Bug-guile mailing list
Bug-guile@gnu.org
http://mail.gnu.org/mailman/listinfo/bug-guile

Re: inexact integers in modulo etc

[Rob Browning]

Bill Schottstaedt <bil@ccrma.Stanford.EDU> writes:

> I guess this is not news, but just in case... Some Guile numerical
> primitives that should (could?) accept inexact integers (at least
> that's the way I read r5rs) do not.  The remainder example below is
> taken from r5rs:

I'll add these to the list as I look back over numbers.c -- I've been
integrating GMP support, starting with our bignums, and I've already
fixed some similar issues (maybe these as well?).

I've filed your message as workbook/bugs/numbers-gmp-conversion.  I'll
add other bits to it as appropriate.

Thanks

-- 
Rob Browning
rlb @defaultvalue.org, @linuxdevel.com, and @debian.org
Previously @cs.utexas.edu
GPG=1C58 8B2C FB5E 3F64 EA5C  64AE 78FE E5FE F0CB A0AD

_______________________________________________
Bug-guile mailing list
Bug-guile@gnu.org
http://mail.gnu.org/mailman/listinfo/bug-guile