std.rational?

[John Colvin]

On Sunday, 29 September 2013 at 11:03:46 UTC, Joseph Rushton 
Wakeling wrote:
> On 28/09/13 15:56, MrSmith wrote:
>> This code fails:
>>
>> rational(0, 1) * rational(1, 1);
>>
>>
>> object.Error: Integer Divide by Zero
>> ----------------
>> 0x00408228 in int std.rational.gcf!(int, int).gcf(int, int) at
>> C:\rational\rational.d(878)
>> 0x0040820A in int std.rational.gcf!(int, int).gcf(int, int) at
>> C:\rational\rational.d(870)
>> 0x004082E7 in std.rational.Rational!(int).Rational
>> std.rational.Rational!(int).Rational.opOpAssign!("*",
>> std.rational.Rational!(int).Rational).opOpAssign(std.rational.Rational!(int).Rational)
>> at C:\rational\rational.d(235)
>> 0x004087C3 in std.rational.Rational!(int).Rational
>> std.rational.Rational!(int).Rational.opBinary!("*",
>> std.rational.Rational!(int).Rational).opBinary(std.rational.Rational!(int).Rational)
>> at C:\rational\rational.d(218)
>> 0x0040880C in _Dmain at C:\rational\test.d(8)
>> 0x0040C7EC in extern (C) int rt.dmain2._d_run_main(int, 
>> char**, extern (C) int
>> function(char[][])*).void runMain()
>> 0x0040C827 in extern (C) int rt.dmain2._d_run_main(int, 
>> char**, extern (C) int
>> function(char[][])*).void runAll()
>> 0x0040C425 in _d_run_main
>> 0x0040A064 in main
>> 0x769C33AA in BaseThreadInitThunk
>> 0x77C19EF2 in RtlInitializeExceptionChain
>> 0x77C19EC5 in RtlInitializeExceptionChain
>> ----------------
>>
>> It seems to me like gcf is not properly implemented. Also why 
>> its name is gcf
>> (greatest common factor) and not gcd (greatest common divisor)?
>
> Good catch, thank you!
>
> What compiler and options are you using to get that detailed 
> error report?  With dmd -main -unittest -debug rational.d I get 
> only: "Floating point exception (core dumped)".  (Albeit I'm on 
> Linux not Windows, I guess that might make a difference.)

It's a linux thing AFAIK