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No longer use bits to express output. Still need to streamline the xBits and yBits (aka remove the usage of toString(2)), but hopefully the owner can help on that part.

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This commit is contained in:
Favian Contreras 2014-12-02 14:43:09 -08:00
parent bed0e20df3
commit 316b416bf4
1 changed files with 28 additions and 23 deletions
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51
decimal.js
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@ -2049,42 +2049,47 @@
return new Decimal(NaN);
}
var x_bits, y_bits, tmp_external = external;
var xBits, yBits, tmpExternal = external;
external = false;
if (x['s'] < 0) {
x_bits = '1' + x['not']()['toString'](2).replace(/[01]/g, function (d) { return +!+d });
xBits = '1' + x['not']()['toString'](2).replace(/[01]/g, function (d) { return +!+d });
} else {
x_bits = '0' + x['trunc']()['toString'](2);
xBits = '0' + x['trunc']()['toString'](2);
}
if (y['s'] < 0) {
y_bits = '1' + y['not']()['toString'](2).replace(/[01]/g, function (d) { return +!+d });
yBits = '1' + y['not']()['toString'](2).replace(/[01]/g, function (d) { return +!+d });
} else {
y_bits = '0' + y['trunc']()['toString'](2);
yBits = '0' + y['trunc']()['toString'](2);
}
external = tmp_external;
external = tmpExternal;
if (x_bits.length > y_bits.length) {
y_bits = y_bits.padLeft((y['s'] < 0) ? '1' : '0', x_bits.length);
} else if (x_bits.length < y_bits.length) {
x_bits = x_bits.padLeft((x['s'] < 0) ? '1' : '0', y_bits.length);
if (xBits.length > yBits.length) {
yBits = yBits.padLeft((y['s'] < 0) ? '1' : '0', xBits.length);
} else if (xBits.length < yBits.length) {
xBits = xBits.padLeft((x['s'] < 0) ? '1' : '0', yBits.length);
}
var out_str = "";
for (var i = 0; i < x_bits.length; ++i) {
out_str += "" + func(x_bits[i], y_bits[i]);
var outVal = new Decimal(0);
var twoPower = Decimal['ONE'];
if (func(xBits[0], yBits[0]) == 0) {
for (var i = xBits.length - 1; i > 0; --i) {
if (func(xBits[i], yBits[i])) {
outVal = outVal['plus'](twoPower);
}
twoPower = twoPower['times'](2);
}
return outVal;
}
if (out_str[0] == '0') {
return new Decimal(out_str, 2);
for (var i = xBits.length - 1; i > 0; --i) {
if (func(xBits[i], yBits[i]) == 0) {
outVal = outVal['plus'](twoPower['plus'](Decimal['ONE']));
}
twoPower = twoPower['times'](2);
}
var comp_str = "";
for (var i = 1; i < out_str.length; ++i) {
comp_str += (out_str[i] == '0') ? '1' : '0';
}
return new Decimal(comp_str, 2)['plus'](Decimal['ONE'])['neg']();
return outVal['plus'](Decimal['ONE'])['neg']();
}
function coefficientToString(a) {
@ -2313,7 +2318,7 @@
r = r || xc[pr + 1] != null;
if ( rm < 4
? ( i != null || r ) && ( rm == 0 || rm == ( sign < 0 ? 3 : 2 ) )
? ( i != null || r ) && ( rm == 0 || rm == ( x['s'] < 0 ? 3 : 2 ) )
: i > j || i == j && ( rm == 4 || r || rm == 6 && xc[pr - 1] & 1 ||
rm == ( x['s'] < 0 ? 8 : 7 ) ) ) {