static HRESULT Number_valueOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
NumberInstance *number;
TRACE("\n");
if(!(number = number_this(jsthis)))
return throw_type_error(ctx, JS_E_NUMBER_EXPECTED, NULL);
if(r)
*r = jsval_number(number->value);
return S_OK;
}
static HRESULT Number_valueOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
{
NumberInstance *number;
TRACE("\n");
if(!(number = number_this(jsthis)))
return throw_type_error(ctx, ei, IDS_NOT_NUM, NULL);
if(retv)
*retv = number->num;
return S_OK;
}
static HRESULT Number_toPrecision(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
NumberInstance *number;
INT prec = 0, size;
jsstr_t *str;
DOUBLE val;
HRESULT hres;
if(!(number = number_this(jsthis)))
return throw_type_error(ctx, JS_E_NUMBER_EXPECTED, NULL);
if(argc) {
hres = to_int32(ctx, argv[0], &prec);
if(FAILED(hres))
return hres;
if(prec<1 || prec>21)
return throw_range_error(ctx, JS_E_PRECISION_OUT_OF_RANGE, NULL);
}
val = number->value;
if(isinf(val) || isnan(val) || !prec) {
hres = to_string(ctx, jsval_number(val), &str);
if(FAILED(hres))
return hres;
} else {
if(val != 0)
size = floor(log10(val>0 ? val : -val)) + 1;
else
size = 1;
if(size > prec)
str = number_to_exponential(val, prec-1);
else
str = number_to_fixed(val, prec-size);
if(!str)
return E_OUTOFMEMORY;
}
if(r)
*r = jsval_string(str);
else
jsstr_release(str);
return S_OK;
}
static HRESULT Number_toExponential(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
NumberInstance *number;
DOUBLE val;
INT prec = 0;
jsstr_t *str;
HRESULT hres;
TRACE("\n");
if(!(number = number_this(jsthis)))
return throw_type_error(ctx, JS_E_NUMBER_EXPECTED, NULL);
if(argc) {
hres = to_int32(ctx, argv[0], &prec);
if(FAILED(hres))
return hres;
if(prec<0 || prec>20)
return throw_range_error(ctx, JS_E_FRACTION_DIGITS_OUT_OF_RANGE, NULL);
}
val = number->value;
if(isinf(val) || isnan(val)) {
hres = to_string(ctx, jsval_number(val), &str);
if(FAILED(hres))
return hres;
} else {
if(!prec)
prec--;
str = number_to_exponential(val, prec);
if(!str)
return E_OUTOFMEMORY;
}
if(r)
*r = jsval_string(str);
else
jsstr_release(str);
return S_OK;
}
/* ECMA-262 3rd Edition 15.7.4.2 */
static HRESULT Number_toString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
NumberInstance *number;
INT radix = 10;
DOUBLE val;
jsstr_t *str;
HRESULT hres;
TRACE("\n");
if(!(number = number_this(jsthis)))
return throw_type_error(ctx, JS_E_NUMBER_EXPECTED, NULL);
if(argc) {
hres = to_int32(ctx, argv[0], &radix);
if(FAILED(hres))
return hres;
if(radix<2 || radix>36)
return throw_type_error(ctx, JS_E_INVALIDARG, NULL);
}
val = number->value;
if(radix==10 || isnan(val) || isinf(val)) {
hres = to_string(ctx, jsval_number(val), &str);
if(FAILED(hres))
return hres;
} else {
INT idx = 0;
DOUBLE integ, frac, log_radix = 0;
WCHAR buf[NUMBER_TOSTRING_BUF_SIZE+16];
BOOL exp = FALSE;
if(val<0) {
val = -val;
buf[idx++] = '-';
}
while(1) {
integ = floor(val);
frac = val-integ;
if(integ == 0)
buf[idx++] = '0';
while(integ>=1 && idx<NUMBER_TOSTRING_BUF_SIZE) {
buf[idx] = fmod(integ, radix);
if(buf[idx]<10) buf[idx] += '0';
else buf[idx] += 'a'-10;
integ /= radix;
idx++;
}
if(idx<NUMBER_TOSTRING_BUF_SIZE) {
INT beg = buf[0]=='-'?1:0;
INT end = idx-1;
WCHAR wch;
while(end > beg) {
wch = buf[beg];
buf[beg++] = buf[end];
buf[end--] = wch;
}
}
if(idx != NUMBER_TOSTRING_BUF_SIZE) buf[idx++] = '.';
while(frac>0 && idx<NUMBER_TOSTRING_BUF_SIZE) {
frac *= radix;
buf[idx] = fmod(frac, radix);
frac -= buf[idx];
if(buf[idx]<10) buf[idx] += '0';
else buf[idx] += 'a'-10;
idx++;
}
if(idx==NUMBER_TOSTRING_BUF_SIZE && !exp) {
exp = TRUE;
idx = (buf[0]=='-') ? 1 : 0;
log_radix = floor(log(val)/log(radix));
val *= pow(radix, -log_radix);
continue;
}
break;
}
while(buf[idx-1] == '0') idx--;
if(buf[idx-1] == '.') idx--;
if(exp) {
if(log_radix==0)
buf[idx] = 0;
else {
static const WCHAR formatW[] = {'(','e','%','c','%','d',')',0};
WCHAR ch;
if(log_radix<0) {
log_radix = -log_radix;
ch = '-';
}
else ch = '+';
sprintfW(&buf[idx], formatW, ch, (int)log_radix);
}
}
else buf[idx] = '\0';
str = jsstr_alloc(buf);
if(!str)
return E_OUTOFMEMORY;
}
if(r)
*r = jsval_string(str);
else
jsstr_release(str);
return S_OK;
}
/* ECMA-262 3rd Edition 15.7.4.2 */
static HRESULT Number_toString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
{
NumberInstance *number;
INT radix = 10;
DOUBLE val;
BSTR str;
HRESULT hres;
TRACE("\n");
if(!(number = number_this(jsthis)))
return throw_type_error(ctx, ei, IDS_NOT_NUM, NULL);
if(arg_cnt(dp)) {
hres = to_int32(ctx, get_arg(dp, 0), ei, &radix);
if(FAILED(hres))
return hres;
if(radix<2 || radix>36)
return throw_type_error(ctx, ei, IDS_INVALID_CALL_ARG, NULL);
}
if(V_VT(&number->num) == VT_I4)
val = V_I4(&number->num);
else
val = V_R8(&number->num);
if(radix==10 || isnan(val) || isinf(val)) {
hres = to_string(ctx, &number->num, ei, &str);
if(FAILED(hres))
return hres;
}
else {
INT idx = 0;
DOUBLE integ, frac, log_radix = 0;
WCHAR buf[NUMBER_TOSTRING_BUF_SIZE+16];
BOOL exp = FALSE;
if(val<0) {
val = -val;
buf[idx++] = '-';
}
while(1) {
integ = floor(val);
frac = val-integ;
if(integ == 0)
buf[idx++] = '0';
while(integ>=1 && idx<NUMBER_TOSTRING_BUF_SIZE) {
buf[idx] = fmod(integ, radix);
if(buf[idx]<10) buf[idx] += '0';
else buf[idx] += 'a'-10;
integ /= radix;
idx++;
}
if(idx<NUMBER_TOSTRING_BUF_SIZE) {
INT beg = buf[0]=='-'?1:0;
INT end = idx-1;
WCHAR wch;
while(end > beg) {
wch = buf[beg];
buf[beg++] = buf[end];
buf[end--] = wch;
}
}
if(idx != NUMBER_TOSTRING_BUF_SIZE) buf[idx++] = '.';
while(frac>0 && idx<NUMBER_TOSTRING_BUF_SIZE) {
frac *= radix;
buf[idx] = fmod(frac, radix);
frac -= buf[idx];
if(buf[idx]<10) buf[idx] += '0';
else buf[idx] += 'a'-10;
idx++;
}
if(idx==NUMBER_TOSTRING_BUF_SIZE && !exp) {
exp = TRUE;
idx = (buf[0]=='-') ? 1 : 0;
log_radix = floor(log(val)/log(radix));
val *= pow(radix, -log_radix);
continue;
}
break;
}
while(buf[idx-1] == '0') idx--;
if(buf[idx-1] == '.') idx--;
if(exp) {
if(log_radix==0)
buf[idx++] = '\0';
else {
static const WCHAR formatW[] = {'(','e','%','c','%','d',')',0};
WCHAR ch;
if(log_radix<0) {
log_radix = -log_radix;
ch = '-';
}
else ch = '+';
sprintfW(&buf[idx], formatW, ch, (int)log_radix);
}
}
else buf[idx] = '\0';
str = SysAllocString(buf);
if(!str)
return E_OUTOFMEMORY;
}
if(retv) {
V_VT(retv) = VT_BSTR;
V_BSTR(retv) = str;
}else {
SysFreeString(str);
}
return S_OK;
}