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563 lines
13 KiB
C
563 lines
13 KiB
C
/*
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* Copyright 2008 Jacek Caban for CodeWeavers
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* Copyright 2009 Piotr Caban
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "jscript.h"
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#include <ntsecapi.h>
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static const WCHAR EW[] = {'E',0};
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static const WCHAR LOG2EW[] = {'L','O','G','2','E',0};
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static const WCHAR LOG10EW[] = {'L','O','G','1','0','E',0};
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static const WCHAR LN2W[] = {'L','N','2',0};
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static const WCHAR LN10W[] = {'L','N','1','0',0};
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static const WCHAR PIW[] = {'P','I',0};
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static const WCHAR SQRT2W[] = {'S','Q','R','T','2',0};
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static const WCHAR SQRT1_2W[] = {'S','Q','R','T','1','_','2',0};
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static const WCHAR absW[] = {'a','b','s',0};
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static const WCHAR acosW[] = {'a','c','o','s',0};
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static const WCHAR asinW[] = {'a','s','i','n',0};
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static const WCHAR atanW[] = {'a','t','a','n',0};
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static const WCHAR atan2W[] = {'a','t','a','n','2',0};
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static const WCHAR ceilW[] = {'c','e','i','l',0};
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static const WCHAR cosW[] = {'c','o','s',0};
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static const WCHAR expW[] = {'e','x','p',0};
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static const WCHAR floorW[] = {'f','l','o','o','r',0};
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static const WCHAR logW[] = {'l','o','g',0};
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static const WCHAR maxW[] = {'m','a','x',0};
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static const WCHAR minW[] = {'m','i','n',0};
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static const WCHAR powW[] = {'p','o','w',0};
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static const WCHAR randomW[] = {'r','a','n','d','o','m',0};
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static const WCHAR roundW[] = {'r','o','u','n','d',0};
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static const WCHAR sinW[] = {'s','i','n',0};
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static const WCHAR sqrtW[] = {'s','q','r','t',0};
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static const WCHAR tanW[] = {'t','a','n',0};
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/* ECMA-262 3rd Edition 15.8.2.12 */
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static HRESULT Math_abs(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double d;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &d);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(d < 0.0 ? -d : d);
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return S_OK;
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}
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static HRESULT Math_acos(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double x;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &x);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(x < -1.0 || x > 1.0 ? NAN : acos(x));
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return S_OK;
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}
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static HRESULT Math_asin(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double x;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &x);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(x < -1.0 || x > 1.0 ? NAN : asin(x));
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return S_OK;
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}
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static HRESULT Math_atan(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double x;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &x);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(atan(x));
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return S_OK;
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}
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static HRESULT Math_atan2(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double x, y;
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HRESULT hres;
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TRACE("\n");
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if(argc<2) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &y);
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if(FAILED(hres))
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return hres;
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hres = to_number(ctx, argv[1], &x);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(atan2(y, x));
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return S_OK;
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}
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/* ECMA-262 3rd Edition 15.8.2.6 */
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static HRESULT Math_ceil(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double x;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &x);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(ceil(x));
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return S_OK;
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}
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static HRESULT Math_cos(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double x;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &x);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(cos(x));
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return S_OK;
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}
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static HRESULT Math_exp(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double x;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &x);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(exp(x));
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return S_OK;
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}
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static HRESULT Math_floor(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double x;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &x);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(floor(x));
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return S_OK;
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}
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static HRESULT Math_log(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double x;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &x);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(x < -0.0 ? NAN : log(x));
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return S_OK;
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}
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/* ECMA-262 3rd Edition 15.8.2.11 */
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static HRESULT Math_max(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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DOUBLE max, d;
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DWORD i;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(-INFINITY);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &max);
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if(FAILED(hres))
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return hres;
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for(i=1; i < argc; i++) {
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hres = to_number(ctx, argv[i], &d);
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if(FAILED(hres))
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return hres;
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if(d > max || isnan(d))
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max = d;
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}
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if(r)
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*r = jsval_number(max);
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return S_OK;
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}
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/* ECMA-262 3rd Edition 15.8.2.12 */
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static HRESULT Math_min(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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DOUBLE min, d;
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DWORD i;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(INFINITY);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &min);
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if(FAILED(hres))
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return hres;
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for(i=1; i < argc; i++) {
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hres = to_number(ctx, argv[i], &d);
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if(FAILED(hres))
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return hres;
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if(d < min || isnan(d))
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min = d;
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}
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if(r)
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*r = jsval_number(min);
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return S_OK;
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}
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/* ECMA-262 3rd Edition 15.8.2.13 */
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static HRESULT Math_pow(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double x, y;
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HRESULT hres;
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TRACE("\n");
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if(argc < 2) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &x);
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if(FAILED(hres))
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return hres;
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hres = to_number(ctx, argv[1], &y);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(pow(x, y));
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return S_OK;
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}
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/* ECMA-262 3rd Edition 15.8.2.14 */
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static HRESULT Math_random(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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UINT x;
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TRACE("\n");
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if(!RtlGenRandom(&x, sizeof(x)))
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return E_UNEXPECTED;
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if(r)
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*r = jsval_number((double)x/(double)UINT_MAX);
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return S_OK;
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}
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/* ECMA-262 3rd Edition 15.8.2.15 */
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static HRESULT Math_round(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double x;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &x);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(floor(x+0.5));
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return S_OK;
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}
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static HRESULT Math_sin(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double x;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &x);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(sin(x));
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return S_OK;
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}
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static HRESULT Math_sqrt(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double x;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &x);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(sqrt(x));
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return S_OK;
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}
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static HRESULT Math_tan(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
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jsval_t *r)
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{
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double x;
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HRESULT hres;
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TRACE("\n");
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if(!argc) {
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if(r)
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*r = jsval_number(NAN);
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return S_OK;
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}
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hres = to_number(ctx, argv[0], &x);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_number(tan(x));
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return S_OK;
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}
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static const builtin_prop_t Math_props[] = {
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{absW, Math_abs, PROPF_METHOD|1},
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{acosW, Math_acos, PROPF_METHOD|1},
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{asinW, Math_asin, PROPF_METHOD|1},
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{atanW, Math_atan, PROPF_METHOD|1},
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{atan2W, Math_atan2, PROPF_METHOD|2},
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{ceilW, Math_ceil, PROPF_METHOD|1},
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{cosW, Math_cos, PROPF_METHOD|1},
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{expW, Math_exp, PROPF_METHOD|1},
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{floorW, Math_floor, PROPF_METHOD|1},
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{logW, Math_log, PROPF_METHOD|1},
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{maxW, Math_max, PROPF_METHOD|2},
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{minW, Math_min, PROPF_METHOD|2},
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{powW, Math_pow, PROPF_METHOD|2},
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{randomW, Math_random, PROPF_METHOD},
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{roundW, Math_round, PROPF_METHOD|1},
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{sinW, Math_sin, PROPF_METHOD|1},
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{sqrtW, Math_sqrt, PROPF_METHOD|1},
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{tanW, Math_tan, PROPF_METHOD|1}
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};
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static const builtin_info_t Math_info = {
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JSCLASS_MATH,
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{NULL, NULL, 0},
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sizeof(Math_props)/sizeof(*Math_props),
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Math_props,
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NULL,
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NULL
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};
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HRESULT create_math(script_ctx_t *ctx, jsdisp_t **ret)
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{
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jsdisp_t *math;
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unsigned i;
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HRESULT hres;
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struct {
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const WCHAR *name;
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DOUBLE val;
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}constants[] = {
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{EW, M_E}, /* ECMA-262 3rd Edition 15.8.1.1 */
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{LN10W, M_LN10}, /* ECMA-262 3rd Edition 15.8.1.2 */
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{LN2W, M_LN2}, /* ECMA-262 3rd Edition 15.8.1.3 */
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{LOG2EW, M_LOG2E}, /* ECMA-262 3rd Edition 15.8.1.4 */
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{LOG10EW, M_LOG10E}, /* ECMA-262 3rd Edition 15.8.1.5 */
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{PIW, M_PI}, /* ECMA-262 3rd Edition 15.8.1.6 */
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{SQRT1_2W, M_SQRT1_2}, /* ECMA-262 3rd Edition 15.8.1.7 */
|
|
{SQRT2W, M_SQRT2}, /* ECMA-262 3rd Edition 15.8.1.8 */
|
|
};
|
|
|
|
math = heap_alloc_zero(sizeof(jsdisp_t));
|
|
if(!math)
|
|
return E_OUTOFMEMORY;
|
|
|
|
hres = init_dispex_from_constr(math, ctx, &Math_info, ctx->object_constr);
|
|
if(FAILED(hres)) {
|
|
heap_free(math);
|
|
return hres;
|
|
}
|
|
|
|
for(i=0; i < sizeof(constants)/sizeof(*constants); i++) {
|
|
hres = jsdisp_propput_const(math, constants[i].name, jsval_number(constants[i].val));
|
|
if(FAILED(hres)) {
|
|
jsdisp_release(math);
|
|
return hres;
|
|
}
|
|
}
|
|
|
|
*ret = math;
|
|
return S_OK;
|
|
}
|