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/*
* Copyright (C)2005-2014 Haxe Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
package js.html.compat;
@:keep
class Float64Array {
static var BYTES_PER_ELEMENT = 8;
static function _new( ?arg1 : Dynamic, ?offset : Int, ?length : Int ) : Dynamic {
var arr : Array<Float>;
if( untyped __typeof__(arg1) == 'number' ) {
arr = new Array();
for( i in 0...arg1 )
arr[i] = 0;
untyped {
arr.byteLength = arr.length << 3;
arr.byteOffset = 0;
arr.buffer = new ArrayBuffer([for( i in 0...arr.length << 3 ) 0]); // no sync
}
} else if( Std.is(arg1,ArrayBuffer) ) {
var buffer : ArrayBuffer = arg1;
if( offset == null ) offset = 0;
if( length == null ) length = (buffer.byteLength - offset) >> 3;
arr = [];
// decode buffer
for( i in 0...length ) {
var val1 = untyped buffer.a[offset++] | (buffer.a[offset++] << 8) | (buffer.a[offset++] << 16) | (buffer.a[offset++] << 24);
var val2 = untyped buffer.a[offset++] | (buffer.a[offset++] << 8) | (buffer.a[offset++] << 16) | (buffer.a[offset++] << 24);
arr.push(haxe.io.FPHelper.i64ToDouble(val1,val2));
}
untyped {
arr.byteLength = arr.length<<3;
arr.byteOffset = offset;
arr.buffer = buffer;
}
} else if( Std.is(arg1, Array) ) {
arr = (arg1 : Array<Float>).copy();
// loss of memory sync between buffer and array
var buffer = [];
for( f in arr ) {
var v = haxe.io.FPHelper.doubleToI64(f);
var i = v.low;
buffer.push(i&0xFF);
buffer.push((i>>8)&0xFF);
buffer.push((i>>16)&0xFF);
buffer.push(i>>>24);
var i = v.high;
buffer.push(i&0xFF);
buffer.push((i>>8)&0xFF);
buffer.push((i>>16)&0xFF);
buffer.push(i>>>24);
}
untyped {
arr.byteLength = arr.length << 3;
arr.byteOffset = 0;
arr.buffer = new ArrayBuffer(buffer);
}
} else
throw "TODO "+arg1;
untyped {
arr.subarray = _subarray;
arr.set = _set;
}
return arr;
}
static function _set( ?arg : Dynamic, ?offset : Int ) {
var t : Dynamic = untyped __js__("this");
if( Std.is(arg.buffer,ArrayBuffer) ) {
var a : Array<Int> = arg;
if( arg.byteLength + offset > t.byteLength )
throw "set() outside of range";
for( i in 0...arg.byteLength )
t[i + offset] = a[i];
} else if( Std.is(arg,Array) ) {
var a : Array<Int> = arg;
if( a.length + offset > t.byteLength )
throw "set() outside of range";
for( i in 0...a.length )
t[i + offset] = a[i];
} else
throw "TODO";
}
static function _subarray( start : Int, ?end : Int ) {
var t : Dynamic = untyped __js__("this");
var a = _new(t.slice(start,end));
a.byteOffset = start * 8;
return a;
}
static function __init__() {
var Float64Array = untyped js.Lib.global.Float64Array || (js.Lib.global.Float32Array ? 'notsupported' : null) || _new;
}
}
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