Jacek Caban : jscript: Added Math.pow implementation.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: c4fe1b2efdb10c04a2a0fa984b42d7aa3e979880
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=c4fe1b2efdb10c04a2a0fa984b42d7aa3e979880

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Sun Sep 21 15:46:22 2008 +0200

jscript: Added Math.pow implementation.

---

 dlls/jscript/math.c       |   24 ++++++++++++++++++++++--
 dlls/jscript/tests/api.js |    9 +++++++++
 2 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/dlls/jscript/math.c b/dlls/jscript/math.c
index dc6f365..8803f7c 100644
--- a/dlls/jscript/math.c
+++ b/dlls/jscript/math.c
@@ -272,11 +272,31 @@ static HRESULT Math_min(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *d
     return S_OK;
 }
 
+/* ECMA-262 3rd Edition    15.8.2.13 */
 static HRESULT Math_pow(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
 {
-    FIXME("\n");
-    return E_NOTIMPL;
+    VARIANT x, y;
+    HRESULT hres;
+
+    TRACE("\n");
+
+    if(arg_cnt(dp) < 2) {
+        FIXME("unimplemented arg_cnt %d\n", arg_cnt(dp));
+        return E_NOTIMPL;
+    }
+
+    hres = to_number(dispex->ctx, get_arg(dp, 0), ei, &x);
+    if(FAILED(hres))
+        return hres;
+
+    hres = to_number(dispex->ctx, get_arg(dp, 1), ei, &y);
+    if(FAILED(hres))
+        return hres;
+
+    if(retv)
+        num_set_val(retv, pow(num_val(&x), num_val(&y)));
+    return S_OK;
 }
 
 static HRESULT Math_random(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
diff --git a/dlls/jscript/tests/api.js b/dlls/jscript/tests/api.js
index 85bca45..7796623 100644
--- a/dlls/jscript/tests/api.js
+++ b/dlls/jscript/tests/api.js
@@ -291,4 +291,13 @@ ok(tmp === 1, "Math.abs(true) = " + tmp);
 tmp = Math.abs(-3, 2);
 ok(tmp === 3, "Math.abs(-3, 2) = " + tmp);
 
+tmp = Math.pow(2, 2);
+ok(tmp === 4, "Math.pow(2, 2) = " + tmp);
+
+tmp = Math.pow(4, 0.5);
+ok(tmp === 2, "Math.pow(2, 2) = " + tmp);
+
+tmp = Math.pow(2, 2, 3);
+ok(tmp === 4, "Math.pow(2, 2, 3) = " + tmp);
+
 reportSuccess();