Sorry for the *late* reply, I was in vacation :-) Others already explained you the "while (0)" thing...
On Sun, 2006-07-02 at 17:53 -0700, Rusmin Susanto wrote: > 2. How do you know that "sin" function is equal to the following > instructions in x86: > > x86_fsin (code); > x86_fldz (code); > x86_fp_op_reg (code, X86_FADD, 1, TRUE); Actually the "x86_fsin (code);" emits an fsin opcode which is enough to perform a sin operation. The following fldz and fadd are needed to truncate the result to 64 bits (fsin operates with 80 bits), they are the fastest way I found (asking around, thanks lupus!) to do this floating point conversion. Not truncating the result caused very subtle bugs because the required semantics in CIL is to operate with 64 bits values. Ciao, Massi _______________________________________________ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
