Jacek Caban : jscript: Added Math.random implementation.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: a20a9166a2b0cde1ad2d04a67b19434becd76fef
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=a20a9166a2b0cde1ad2d04a67b19434becd76fef

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Thu Jan 22 13:47:00 2009 +0100

jscript: Added Math.random implementation.

---

 dlls/jscript/Makefile.in  |    2 +-
 dlls/jscript/math.c       |   16 ++++++++++++++--
 dlls/jscript/tests/api.js |    8 ++++++++
 3 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/dlls/jscript/Makefile.in b/dlls/jscript/Makefile.in
index 5d4506a..5d7ee69 100644
--- a/dlls/jscript/Makefile.in
+++ b/dlls/jscript/Makefile.in
@@ -3,7 +3,7 @@ TOPOBJDIR = ../..
 SRCDIR    = @srcdir@
 VPATH     = @srcdir@
 MODULE    = jscript.dll
-IMPORTS   = oleaut32 kernel32
+IMPORTS   = oleaut32 advapi32 kernel32
 
 RC_SRCS = rsrc.rc
 
diff --git a/dlls/jscript/math.c b/dlls/jscript/math.c
index f2a3d0c..9c1a56b 100644
--- a/dlls/jscript/math.c
+++ b/dlls/jscript/math.c
@@ -20,8 +20,10 @@
 #include "wine/port.h"
 
 #include <math.h>
+#include <limits.h>
 
 #include "jscript.h"
+#include "ntsecapi.h"
 
 #include "wine/debug.h"
 
@@ -352,11 +354,21 @@ static HRESULT Math_pow(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *d
     return S_OK;
 }
 
+/* ECMA-262 3rd Edition    15.8.2.14 */
 static HRESULT Math_random(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
 {
-    FIXME("\n");
-    return E_NOTIMPL;
+    UINT r;
+
+    TRACE("\n");
+
+    if(!RtlGenRandom(&r, sizeof(r)))
+        return E_UNEXPECTED;
+
+    if(retv)
+        num_set_val(retv, (DOUBLE)r/(DOUBLE)UINT_MAX);
+
+    return S_OK;
 }
 
 /* ECMA-262 3rd Edition    15.8.2.15 */
diff --git a/dlls/jscript/tests/api.js b/dlls/jscript/tests/api.js
index 16fba15..7fd20a6 100644
--- a/dlls/jscript/tests/api.js
+++ b/dlls/jscript/tests/api.js
@@ -585,6 +585,14 @@ ok(tmp === 2, "Math.pow(2, 2) = " + tmp);
 tmp = Math.pow(2, 2, 3);
 ok(tmp === 4, "Math.pow(2, 2, 3) = " + tmp);
 
+tmp = Math.random();
+ok(typeof(tmp) == "number", "typeof(tmp) = " + typeof(tmp));
+ok(0 <= tmp && tmp <= 1, "Math.random() = " + tmp);
+
+tmp = Math.random(100);
+ok(typeof(tmp) == "number", "typeof(tmp) = " + typeof(tmp));
+ok(0 <= tmp && tmp <= 1, "Math.random(100) = " + tmp);
+
 var func = function  (a) {
         var a = 1;
         if(a) return;