[PATCH 3/4] vbscript: Implemented Sgn(try 3)

[Shuai Meng]

Change log;
   use to_double instead of VariantChangeType.
---
  dlls/vbscript/global.c      | 53 
++++++++++++++++++++-------------------------
  dlls/vbscript/tests/api.vbs | 21 ++++++++++++++++++
  2 files changed, 45 insertions(+), 29 deletions(-)


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