From Lua 5.2: Add math.log(x, base).

2012-10-07 15:47:11 +02:00
parent 0d62e2e1ab
commit 0561a56938
8 changed files with 129 additions and 11 deletions
--- a/src/vm_ppc.dasc
+++ b/src/vm_ppc.dasc
@@ -1804,7 +1804,16 @@ static void build_subroutines(BuildCtx *ctx)
  |.else
  |  math_extern sqrt
  |.endif
-  |  math_extern log
+  |
+  |.ffunc math_log
+  |  cmplwi NARGS8:RC, 8
+  |   lwz CARG3, 0(BASE)
+  |    lfd FARG1, 0(BASE)
+  |  bne ->fff_fallback			// Need exactly 1 argument.
+  |  checknum CARG3; bge ->fff_fallback
+  |  blex log
+  |  b ->fff_resn
+  |
  |  math_extern log10
  |  math_extern exp
  |  math_extern sin