my crude benchmark results

Wed Jul 14 18:45:00 GMT 2004

Tom Tromey writes:
 > Bryce> I think the main problem here, judging by the huge difference
 > Bryce> shown by --fast-math, is that we implement the Math.* calls
 > Bryce> inefficiently. In libjava we use the fdlibm library to
 > Bryce> implement them, which is written in pure C and contains no
 > Bryce> cpu-specific asm optimizations.
 > 
 > For non-strictfp code (like java.lang.Math), it seems to me that we
 > could avoid fdlibm and just use the libc functions. Is that not so?
 > I wonder if we could remove fdlibm entirely now that StrictMath is
 > pure java.
AFAICS StrictMath is more or less a Java port of fdlibm; we surely
don't need both.
Andrew.