From d8135b8243e72a6a1d5db3aac742fe20996baf1c Mon Sep 17 00:00:00 2001
From: Shuai Meng <mengshuaicalendr@gmail.com>
Date: Fri, 13 Jun 2014 22:30:29 +0800
Subject: [PATCH] vbscript: Implemented CSng.

---
 dlls/vbscript/global.c      | 19 ++++++++++++++++--
 dlls/vbscript/tests/api.vbs | 48 +++++++++++++++++++++++++++++++++++++++++++++
 dlls/vbscript/tests/run.c   |  2 ++
 3 files changed, 67 insertions(+), 2 deletions(-)

diff --git a/dlls/vbscript/global.c b/dlls/vbscript/global.c
index 294004b0722..5160374c98f 100644
--- a/dlls/vbscript/global.c
+++ b/dlls/vbscript/global.c
@@ -514,8 +514,23 @@ static HRESULT Global_CDbl(vbdisp_t *This, VARIANT *arg, unsigned args_cnt, VARI
 
 static HRESULT Global_CSng(vbdisp_t *This, VARIANT *arg, unsigned args_cnt, VARIANT *res)
 {
-    FIXME("\n");
-    return E_NOTIMPL;
+    VARIANT v;
+    HRESULT hres;
+
+    TRACE("%s\n", debugstr_variant(arg));
+
+    assert(args_cnt == 1);
+
+    V_VT(&v) = VT_EMPTY;
+    hres = VariantChangeType(&v, arg, 0, VT_R4);
+    if(FAILED(hres))
+        return hres;
+
+    if(!res)
+        return DISP_E_BADVARTYPE;
+
+   *res = v;
+   return S_OK;
 }
 
 static HRESULT Global_CStr(vbdisp_t *This, VARIANT *arg, unsigned args_cnt, VARIANT *res)
diff --git a/dlls/vbscript/tests/api.vbs b/dlls/vbscript/tests/api.vbs
index 2aad761ffc5..2cf9bb7c7cc 100644
--- a/dlls/vbscript/tests/api.vbs
+++ b/dlls/vbscript/tests/api.vbs
@@ -797,4 +797,52 @@ MyObject.myval = 1.5
 Call ok(CInt(MyObject) = 2, "CInt(MyObject) = " & CInt(MyObject))
 Call ok(getVT(CInt(MyObject)) = "VT_I2", "getVT(CInt(MyObject)) = " & getVT(CInt(MyObject)))
 
+Sub testCSngError(strings, error_num1, error_num2)
+    on error resume next
+    Dim x
+
+    Call Err.clear()
+    x = CSng(strings)
+    Call ok(Err.number = error_num1, "Err.number = " & Err.number)
+
+    Call Err.clear()
+    Call CSng(strings)
+    Call ok(Err.number = error_num2, "Err.number = " & Err.number)
+End Sub
+
+Call ok(CSng(Empty) = 0, "CSng(Empty) = " & CSng(Empty))
+Call ok(getVT(CSng(Empty)) = "VT_R4", "getVT(CSng(Empty)) = " & getVT(CSng(Empty)))
+Call ok(CSng(CByte(0)) = 0, "CSng(CByte(0)) = " & CSng(CByte(0)))
+Call ok(getVT(CSng(CCur(0))) = "VT_R4", "getVT(CSng(CCur(0))) = " & getVT(CSng(CCur(0))))
+Call ok(CSng(CCur(0)) = 0, "CSng(CCur(0)) = " & CSng(CCur(0)))
+Call ok(getVT(CSng(CCur(0))) = "VT_R4", "getVT(CSng(CCur(0))) = " & getVT(CSng(CCur(0))))
+Call ok(CSng(0) = 0, "CSng(0) = " & CSng(0))
+Call ok(getVT(CSng(0)) = "VT_R4", "getVT(CSng(0)) = " & getVT(CSng(0)))
+Call ok(CSng(32768) = 32768, "CSng(32768) = " & CSng(32768))
+Call ok(getVT(CSng(32768)) = "VT_R4", "getVT(CSng(32768)) = " & getVT(CSng(32768)))
+Call ok(CSng(0.001 * 0.001) = 0.000001, "CSng(0.001 * 0.001) = " & CSng(0.001 * 0.001))
+Call ok(getVT(CSng(0.001 * 0.001)) = "VT_R4", "getVT(CSng(0.001 * 0.001)) = " & getVT(CSng(0.001 * 0.001)))
+Call ok(CSng("-1") = -1, "CSng(""-1"") = " & CSng("-1"))
+Call ok(getVT(CSng("-1")) = "VT_R4", "getVT(CSng(""-1"")) = " & getVT(CSng("-1")))
+If isEnglishLang Then
+    Call ok(CSng("-0.5") = -0.5, "CSng(""-0.5"") = " & CSng("-0.5"))
+    Call ok(getVT(CSng("-0.5")) = "VT_R4", "getVT(CSng(""-0.5"")) = " & getVT(CSng("-0.5")))
+End If
+Call testCSngError("", 13, 13)
+Call testCSngError("TRUE", 13, 13)
+Call testCSngError("FALSE", 13, 13)
+Call testCSngError("#TRue#", 13, 13)
+Call testCSngError("#fAlSE#", 13, 13)
+Call testCSngError(1, 0, 458)
+Call ok(CSng(True) = -1, "CSng(True) = " & CSng(True))
+Call ok(getVT(CSng(True)) = "VT_R4", "getVT(CSng(True)) = " & getVT(CSng(True)))
+Call ok(CSng(False) = 0, "CSng(False) = " & CSng(False))
+Call ok(getVT(CSng(False)) = "VT_R4", "getVT(CSng(False)) = " & getVT(CSng(False)))
+MyObject.myval = 0.1
+Call ok(CSng(MyObject) = 0.1, "CSng(MyObject) = " & CSng(MyObject))
+Call ok(getVT(CSng(MyObject)) = "VT_R4", "getVT(CSng(MyObject)) = " & getVT(CSng(MyObject)))
+MyObject.myval = 0
+Call ok(CSng(MyObject) = 0, "CSng(MyObject) = " & CSng(MyObject))
+Call ok(getVT(CSng(MyObject)) = "VT_R4", "getVT(CSng(MyObject)) = " & getVT(CSng(MyObject)))
+
 Call reportSuccess()
diff --git a/dlls/vbscript/tests/run.c b/dlls/vbscript/tests/run.c
index 0188c12c757..56361bff611 100644
--- a/dlls/vbscript/tests/run.c
+++ b/dlls/vbscript/tests/run.c
@@ -167,6 +167,8 @@ static const char *vt2a(VARIANT *v)
         return "VT_I2";
     case VT_I4:
         return "VT_I4";
+    case VT_R4:
+        return "VT_R4";
     case VT_R8:
         return "VT_R8";
     case VT_CY:
-- 
2.11.4.GIT