This is the mail archive of the
kawa@sourceware.org
mailing list for the Kawa project.
Division by zero
- From: John-Paul Verkamp <verkampj at umail dot iu dot edu>
- To: Kawa mailing list <kawa at sourceware dot org>
- Date: Thu, 27 Oct 2011 20:31:58 -0400
- Subject: Division by zero
Mostly out of curiosity, why doesn't division by zero raise an error?
#|kawa:1|# (/ 1 0)
1/0
But div does:
#|kawa:2|# (div 1 0)
/dev/stdin:3:1: warning - call to #<procedure div> throws
java.lang.ArithmeticException: / by zero
java.lang.ArithmeticException: / by zero
at gnu.math.IntNum.divide(IntNum.java:591)
at gnu.math.IntNum.divide(IntNum.java:661)
at gnu.math.IntNum.quotient(IntNum.java:828)
at gnu.kawa.functions.DivideOp.applyN(DivideOp.java:127)
at gnu.mapping.ProcedureN.apply2(ProcedureN.java:39)
at gnu.mapping.Procedure.apply(Procedure.java:133)
at gnu.mapping.Procedure.apply(Procedure.java:113)
at gnu.mapping.CallContext.runUntilDone(CallContext.java:234)
at gnu.expr.ModuleExp.evalModule2(ModuleExp.java:348)
at gnu.expr.ModuleExp.evalModule(ModuleExp.java:185)
at kawa.Shell.run(Shell.java:281)
at kawa.Shell.run(Shell.java:194)
at kawa.Shell.run(Shell.java:175)
at kawa.repl.main(repl.java:848)
Thanks,
JP