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Assign correct constructor when duplicating Decimals.

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Michael Mclaughlin 2014-12-11 17:28:20 +00:00
parent da6ae2b716
commit cd88cd7f07
1 changed files with 70 additions and 67 deletions
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decimal.js
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@ -12,7 +12,7 @@
*/ */
var convertBase, DecimalConstructor, noConflict, var convertBase, decimal, noConflict,
crypto = global['crypto'], crypto = global['crypto'],
external = true, external = true,
id = 0, id = 0,
@ -588,15 +588,16 @@
/* /*
Numbers with massively different exponents would result in a massive number of Numbers with massively different exponents would result in a massive number of
zeros needing to be prepended, but this can be avoided while still ensuring correct zeros needing to be prepended, but this can be avoided while still ensuring correct
rounding by limiting the number of zeros to max( precision, i ) + 2, where pr is rounding by limiting the number of zeros to max( pr, i ) + 2, where pr is precision and
precision and i is the length of the coefficient of whichever is greater x or y. i is the length of the coefficient of whichever is greater, x or y.
*/ */
if ( a > ( i += 2 ) ) { if ( a > ( i += 2 ) ) {
a = i; a = i;
t.length = 1; t.length = 1;
} }
for ( t.reverse(), b = a; b--; t.push(0) ); t.reverse();
for ( b = a; b--; t.push(0) );
t.reverse(); t.reverse();
} else { } else {
// Exponents equal. Check digits. // Exponents equal. Check digits.
@ -1116,29 +1117,26 @@
// Multiply! // Multiply!
for ( i = b - 1; i > -1; i-- ) { for ( i = b - 1; i > -1; i-- ) {
b = 0;
for ( b = 0, j = a + i; j > i; b = b / BASE | 0 ) { for ( j = a + i; j > i; ) {
b = c[j] + yc[i] * xc[j - i - 1] + b; b = c[j] + yc[i] * xc[j - i - 1] + b;
c[j--] = b % BASE | 0; c[j--] = b % BASE | 0;
b = b / BASE | 0;
} }
c[j] = ( c[j] + b ) % BASE | 0;
if (b) {
c[j] = ( c[j] + b ) % BASE;
}
} }
if (b) { if (b) {
++e; ++e;
} } else if ( !c[0] ) {
// Remove any leading zero. // Remove leading zero.
if ( !c[0] ) {
c.shift(); c.shift();
} }
// Remove trailing zeros. // Remove trailing zeros.
for ( j = c.length; !c[--j]; c.pop() ); for ( j = c.length; !c[--j]; c.pop() );
y['c'] = c; y['c'] = c;
// Get the number of digits of c[0]. // Get the number of digits of c[0].
@ -1206,7 +1204,7 @@
* *
* Note: as with JS numbers, (-0).toFixed(0) is '0', but e.g. (-0.00001).toFixed(0) is '-0'. * Note: as with JS numbers, (-0).toFixed(0) is '0', but e.g. (-0.00001).toFixed(0) is '-0'.
* *
* [dp] {number} Decimal places. Integer, -MAX_DIGITS to MAX_DIGITS inclusive. * [dp] {number} Decimal places. Integer, 0 to MAX_DIGITS inclusive.
* [rm] {number} Rounding mode. Integer, 0 to 8 inclusive. * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive.
* *
* errors true: Throw if dp and rm are not undefined, null or integers in range. * errors true: Throw if dp and rm are not undefined, null or integers in range.
@ -1273,7 +1271,7 @@
* fractionGroupSize : 0 * fractionGroupSize : 0
* }; * };
* *
* [dp] {number} Decimal places. Integer, -MAX_DIGITS to MAX_DIGITS inclusive. * [dp] {number} Decimal places. Integer, 0 to MAX_DIGITS inclusive.
* [rm] {number} Rounding mode. Integer, 0 to 8 inclusive * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive
* *
* (If dp or rm are invalid the error message will give the offending method call as toFixed.) * (If dp or rm are invalid the error message will give the offending method call as toFixed.)
@ -1288,10 +1286,10 @@
var i, var i,
isNeg = x['s'] < 0, isNeg = x['s'] < 0,
format = x['constructor']['format'], f = x['constructor']['format'],
groupSeparator = format['groupSeparator'], groupSeparator = f['groupSeparator'],
g1 = +format['groupSize'], g1 = +f['groupSize'],
g2 = +format['secondaryGroupSize'], g2 = +f['secondaryGroupSize'],
arr = x.toFixed( dp, rm ).split('.'), arr = x.toFixed( dp, rm ).split('.'),
intPart = arr[0], intPart = arr[0],
fractionPart = arr[1], fractionPart = arr[1],
@ -1320,9 +1318,9 @@
} }
return fractionPart return fractionPart
? intPart + format['decimalSeparator'] + ( ( g2 = +format['fractionGroupSize'] ) ? intPart + f['decimalSeparator'] + ( ( g2 = +f['fractionGroupSize'] )
? fractionPart.replace( new RegExp( '\\d{' + g2 + '}\\B', 'g' ), ? fractionPart.replace( new RegExp( '\\d{' + g2 + '}\\B', 'g' ),
'$&' + format['fractionGroupSeparator'] ) '$&' + f['fractionGroupSeparator'] )
: fractionPart ) : fractionPart )
: intPart; : intPart;
}; };
@ -1393,7 +1391,8 @@
break; break;
} }
d0 = d1, d1 = d2; d0 = d1;
d1 = d2;
n1 = n0['plus']( q['times']( d2 = n1 ) ); n1 = n0['plus']( q['times']( d2 = n1 ) );
n0 = d2; n0 = d2;
@ -1616,7 +1615,7 @@
Math.LN10 + x['e'] + 1 ) ) Math.LN10 + x['e'] + 1 ) )
: new Decimal( b + '' )['e']; : new Decimal( b + '' )['e'];
// Estimate may be incorrect e.g.: x: 0.999999999999999999, y: 2.29, e: 0, r.e:-1 // Estimate may be incorrect e.g. x: 0.999999999999999999, y: 2.29, e: 0, r.e:-1
// Overflow/underflow? // Overflow/underflow?
if ( e > Decimal['maxE'] + 1 || e < Decimal['minE'] - 1 ) { if ( e > Decimal['maxE'] + 1 || e < Decimal['minE'] - 1 ) {
@ -1883,7 +1882,8 @@
r += s; r += s;
} }
for ( j = r.length; r.charAt(--j) == '0'; ); // '0'
for ( j = r.length; r.charCodeAt(--j) === 48; );
return r.slice( 0, j + 1 || 1 ); return r.slice( 0, j + 1 || 1 );
} }
@ -2012,9 +2012,7 @@
strL = str.length; strL = str.length;
for ( ; i < strL; ) { for ( ; i < strL; ) {
for ( arrL = arr.length; arrL--; arr[arrL] *= baseIn ); for ( arrL = arr.length; arrL--; arr[arrL] *= baseIn );
arr[ j = 0 ] += NUMERALS.indexOf( str.charAt( i++ ) ); arr[ j = 0 ] += NUMERALS.indexOf( str.charAt( i++ ) );
for ( ; j < arr.length; j++ ) { for ( ; j < arr.length; j++ ) {
@ -2139,7 +2137,7 @@
// No negative numbers: the caller will add the sign. // No negative numbers: the caller will add the sign.
return str; return str;
} };
})(); })();
@ -2434,7 +2432,7 @@
} }
return q; return q;
} };
})(); })();
@ -2899,7 +2897,7 @@
Decimal = x['constructor']; Decimal = x['constructor'];
// Don't round if sd is null or undefined. // Don't round if sd is null or undefined.
r: if ( sd != null ) { out: if ( sd != null ) {
// Infinity/NaN. // Infinity/NaN.
if ( !( xc = x['c'] ) ) { if ( !( xc = x['c'] ) ) {
@ -2946,7 +2944,7 @@
j = i - LOGBASE + 1; j = i - LOGBASE + 1;
} else { } else {
break r; break out;
} }
} else { } else {
n = k = xc[xci]; n = k = xc[xci];
@ -3082,7 +3080,7 @@
} }
DecimalConstructor = (function () { decimal = (function () {
// Private functions used by static Decimal methods. // Private functions used by static Decimal methods.
@ -3353,7 +3351,7 @@
* n {number|string|Decimal} The power to which to raise the base of the natural log. * n {number|string|Decimal} The power to which to raise the base of the natural log.
* *
*/ */
function exp(n) { return new this(n)['exp']() } function exp(n) { return new this(n)['exp'](); }
/* /*
@ -3371,7 +3369,7 @@
* n {number|string|Decimal} * n {number|string|Decimal}
* *
*/ */
function ln(n) { return new this(n)['ln']() } function ln(n) { return new this(n)['ln'](); }
/* /*
@ -3384,7 +3382,7 @@
* y {number|string|Decimal} The base of the logarithm. * y {number|string|Decimal} The base of the logarithm.
* *
*/ */
function log( x, y ) { return new this(x)['log'](y) } function log( x, y ) { return new this(x)['log'](y); }
/* /*
@ -3422,7 +3420,7 @@
* arguments {number|string|Decimal} * arguments {number|string|Decimal}
* *
*/ */
function max() { return maxOrMin( this, arguments, 'lt' ) } function max() { return maxOrMin( this, arguments, 'lt' ); }
/* /*
@ -3431,7 +3429,7 @@
* arguments {number|string|Decimal} * arguments {number|string|Decimal}
* *
*/ */
function min() { return maxOrMin( this, arguments, 'gt' ) } function min() { return maxOrMin( this, arguments, 'gt' ); }
/* /*
@ -3439,7 +3437,8 @@
*/ */
var parseDecimal = (function () { var parseDecimal = (function () {
var isValid = /^-?(\d+(\.\d*)?|\.\d+)(e[+-]?\d+)?$/i, var isValid = /^-?(\d+(\.\d*)?|\.\d+)(e[+-]?\d+)?$/i,
trim = String.prototype.trim || function () {return this.replace(/^\s+|\s+$/g, '')}; trim = String.prototype.trim ||
function () { return this.replace(/^\s+|\s+$/g, ''); };
return function ( Decimal, x, n, b ) { return function ( Decimal, x, n, b ) {
var d, e, i, isNum, orig, valid; var d, e, i, isNum, orig, valid;
@ -3455,7 +3454,7 @@
if ( b == null && isValid.test(n) ) { if ( b == null && isValid.test(n) ) {
// Determine sign. // Determine sign.
x['s'] = n.charAt(0) == '-' ? ( n = n.slice(1), -1 ) : 1; x['s'] = n.charCodeAt(0) === 45 ? ( n = n.slice(1), -1 ) : 1;
// Either n is not a valid Decimal or a base has been specified. // Either n is not a valid Decimal or a base has been specified.
} else { } else {
@ -3471,7 +3470,7 @@
n = trim.call(n).replace( /^\+(?!-)/, '' ); n = trim.call(n).replace( /^\+(?!-)/, '' );
x['s'] = n.charAt(0) == '-' ? ( n = n.replace( /^-(?!-)/, '' ), -1 ) : 1; x['s'] = n.charCodeAt(0) === 45 ? ( n = n.replace( /^-(?!-)/, '' ), -1 ) : 1;
if ( b != null ) { if ( b != null ) {
@ -3562,10 +3561,10 @@
} }
// Determine leading zeros. // Determine leading zeros.
for ( i = 0; n.charAt(i) == '0'; i++ ); for ( i = 0; n.charCodeAt(i) === 48; i++ );
// Determine trailing zeros. // Determine trailing zeros.
for ( b = n.length; n.charAt(--b) == '0'; ); for ( b = n.length; n.charCodeAt(--b) === 48; );
n = n.slice( i, b + 1 ); n = n.slice( i, b + 1 );
@ -3633,9 +3632,10 @@
// Zero. // Zero.
x['c'] = [ x['e'] = 0 ]; x['c'] = [ x['e'] = 0 ];
} }
id = 0; id = 0;
}
return x;
};
})(); })();
@ -3646,7 +3646,7 @@
* y {number|string|Decimal} The exponent. * y {number|string|Decimal} The exponent.
* *
*/ */
function pow( x, y ) { return new this(x)['pow'](y) } function pow( x, y ) { return new this(x)['pow'](y); }
/* /*
@ -3808,7 +3808,7 @@
* n {number|string|Decimal} * n {number|string|Decimal}
* *
*/ */
function sqrt(n) { return new this(n)['sqrt']() } function sqrt(n) { return new this(n)['sqrt'](); }
/* /*
@ -3830,13 +3830,13 @@
/* /*
* Create and return a new Decimal constructor. * Create and return a Decimal constructor.
* *
*/ */
function DecimalFactory(obj) { function decimalFactory(obj) {
/* /*
* The Decimal constructor. * The Decimal constructor and exported function.
* Create and return a new instance of a Decimal object. * Create and return a new instance of a Decimal object.
* *
* n {number|string|Decimal} A numeric value. * n {number|string|Decimal} A numeric value.
@ -3853,17 +3853,20 @@
return new Decimal( n, b ); return new Decimal( n, b );
} }
// Retain a reference to this Decimal constructor, and shadow
// Decimal.prototype.constructor which points to Object.
x['constructor'] = Decimal;
// Duplicate. // Duplicate.
if ( n instanceof Decimal ) { if ( n instanceof Decimal ) {
if ( b == null ) { if ( b == null ) {
id = 0; id = 0;
x['constructor'] = n['constructor'];
x['s'] = n['s']; x['s'] = n['s'];
x['e'] = n['e']; x['e'] = n['e'];
x['c'] = ( n = n['c'] ) ? n.slice() : n; x['c'] = ( n = n['c'] ) ? n.slice() : n;
return; return x;
} else if ( b == 10 ) { } else if ( b == 10 ) {
return rnd( new Decimal(n), Decimal['precision'], Decimal['rounding'] ); return rnd( new Decimal(n), Decimal['precision'], Decimal['rounding'] );
@ -3872,13 +3875,13 @@
} }
} }
return parseDecimal( x['constructor'] = Decimal, x, n, b ); return parseDecimal( Decimal, x, n, b );
} }
/* ************************ CONSTRUCTOR DEFAULT PROPERTIES ***************************** /* ************************ CONSTRUCTOR DEFAULT PROPERTIES ************************** */
/*
These default values must be integers within the stated ranges (inclusive). These default values must be integers within the stated ranges (inclusive).
Most of these values can be changed during run-time using Decimal.config. Most of these values can be changed during run-time using Decimal.config.
*/ */
@ -4003,7 +4006,7 @@
//Decimal['trunc'] = trunc; //Decimal['trunc'] = trunc;
Decimal['config'] = config; Decimal['config'] = config;
Decimal['constructor'] = DecimalFactory; Decimal['constructor'] = decimalFactory;
Decimal['exp'] = exp; Decimal['exp'] = exp;
Decimal['ln'] = ln; Decimal['ln'] = ln;
Decimal['log'] = log; Decimal['log'] = log;
@ -4020,7 +4023,7 @@
return Decimal; return Decimal;
} }
return DecimalFactory(); return decimalFactory();
})(); })();
@ -4031,12 +4034,12 @@
if ( typeof define == 'function' && define.amd ) { if ( typeof define == 'function' && define.amd ) {
define(function () { define(function () {
return DecimalConstructor; return decimal;
}); });
// Node and other environments that support module.exports. // Node and other environments that support module.exports.
} else if ( typeof module != 'undefined' && module.exports ) { } else if ( typeof module != 'undefined' && module.exports ) {
module.exports = DecimalConstructor; module.exports = decimal;
if ( !crypto ) { if ( !crypto ) {
@ -4049,12 +4052,12 @@
} else { } else {
noConflict = global['Decimal']; noConflict = global['Decimal'];
DecimalConstructor['noConflict'] = function () { decimal['noConflict'] = function () {
global['Decimal'] = noConflict; global['Decimal'] = noConflict;
return DecimalConstructor; return decimal;
}; };
global['Decimal'] = DecimalConstructor; global['Decimal'] = decimal;
} }
})(this); })(this);