mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-10-31 05:10:57 +00:00
bad0556a59
- An empty string is converted to 0 - An empty array is converted to 0 - An array with one item is converted to that item's numeric value - An array with more than one item is converted to NaN
65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
/*
|
|
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <AK/FlyString.h>
|
|
#include <AK/Function.h>
|
|
#include <LibJS/Interpreter.h>
|
|
#include <LibJS/Runtime/MathObject.h>
|
|
|
|
namespace JS {
|
|
|
|
MathObject::MathObject()
|
|
{
|
|
put_native_function("abs", abs);
|
|
put_native_function("random", random);
|
|
}
|
|
|
|
MathObject::~MathObject()
|
|
{
|
|
}
|
|
|
|
Value MathObject::abs(Interpreter& interpreter)
|
|
{
|
|
if (interpreter.call_frame().arguments.is_empty())
|
|
return js_nan();
|
|
|
|
auto number = interpreter.call_frame().arguments[0].to_number();
|
|
if (number.is_nan())
|
|
return js_nan();
|
|
return Value(number.as_double() >= 0 ? number.as_double() : -number.as_double());
|
|
}
|
|
|
|
Value MathObject::random(Interpreter&)
|
|
{
|
|
#ifdef __serenity__
|
|
double r = (double)arc4random() / (double)UINT32_MAX;
|
|
#else
|
|
double r = (double)rand() / (double)RAND_MAX;
|
|
#endif
|
|
return Value(r);
|
|
}
|
|
|
|
}
|