simple-squiggle/node_modules/mathjs/lib/esm/function/arithmetic/floor.js

125 lines
4.3 KiB
JavaScript

import Decimal from 'decimal.js';
import { factory } from '../../utils/factory.js';
import { deepMap } from '../../utils/collection.js';
import { nearlyEqual } from '../../utils/number.js';
import { nearlyEqual as bigNearlyEqual } from '../../utils/bignumber/nearlyEqual.js';
import { createAlgorithm11 } from '../../type/matrix/utils/algorithm11.js';
import { createAlgorithm14 } from '../../type/matrix/utils/algorithm14.js';
var name = 'floor';
var dependencies = ['typed', 'config', 'round', 'matrix', 'equalScalar'];
export var createFloor = /* #__PURE__ */factory(name, dependencies, _ref => {
var {
typed,
config,
round,
matrix,
equalScalar
} = _ref;
var algorithm11 = createAlgorithm11({
typed,
equalScalar
});
var algorithm14 = createAlgorithm14({
typed
});
/**
* Round a value towards minus infinity.
* For matrices, the function is evaluated element wise.
*
* Syntax:
*
* math.floor(x)
* math.floor(x, n)
*
* Examples:
*
* math.floor(3.2) // returns number 3
* math.floor(3.8) // returns number 3
* math.floor(-4.2) // returns number -5
* math.floor(-4.7) // returns number -5
*
* math.floor(3.212, 2) // returns number 3.21
* math.floor(3.288, 2) // returns number 3.28
* math.floor(-4.212, 2) // returns number -4.22
* math.floor(-4.782, 2) // returns number -4.79
*
* const c = math.complex(3.24, -2.71)
* math.floor(c) // returns Complex 3 - 3i
* math.floor(c, 1) // returns Complex 3.2 - 2.8i
*
* math.floor([3.2, 3.8, -4.7]) // returns Array [3, 3, -5]
* math.floor([3.21, 3.82, -4.71], 1) // returns Array [3.2, 3.8, -4.8]
*
* See also:
*
* ceil, fix, round
*
* @param {number | BigNumber | Fraction | Complex | Array | Matrix} x Number to be rounded
* @param {number | BigNumber | Array} [n=0] Number of decimals
* @return {number | BigNumber | Fraction | Complex | Array | Matrix} Rounded value
*/
return typed('floor', {
number: function number(x) {
if (nearlyEqual(x, round(x), config.epsilon)) {
return round(x);
} else {
return Math.floor(x);
}
},
'number, number': function numberNumber(x, n) {
if (nearlyEqual(x, round(x, n), config.epsilon)) {
return round(x, n);
} else {
var [number, exponent] = "".concat(x, "e").split('e');
var result = Math.floor(Number("".concat(number, "e").concat(Number(exponent) + n)));
[number, exponent] = "".concat(result, "e").split('e');
return Number("".concat(number, "e").concat(Number(exponent) - n));
}
},
Complex: function Complex(x) {
return x.floor();
},
'Complex, number': function ComplexNumber(x, n) {
return x.floor(n);
},
BigNumber: function BigNumber(x) {
if (bigNearlyEqual(x, round(x), config.epsilon)) {
return round(x);
} else {
return x.floor();
}
},
'BigNumber, BigNumber': function BigNumberBigNumber(x, n) {
if (bigNearlyEqual(x, round(x, n), config.epsilon)) {
return round(x, n);
} else {
return x.toDecimalPlaces(n.toNumber(), Decimal.ROUND_FLOOR);
}
},
Fraction: function Fraction(x) {
return x.floor();
},
'Fraction, number': function FractionNumber(x, n) {
return x.floor(n);
},
'Array | Matrix': function ArrayMatrix(x) {
// deep map collection, skip zeros since floor(0) = 0
return deepMap(x, this, true);
},
'Array | Matrix, number': function ArrayMatrixNumber(x, n) {
// deep map collection, skip zeros since ceil(0) = 0
return deepMap(x, i => this(i, n), true);
},
'SparseMatrix, number | BigNumber': function SparseMatrixNumberBigNumber(x, y) {
return algorithm11(x, y, this, false);
},
'DenseMatrix, number | BigNumber': function DenseMatrixNumberBigNumber(x, y) {
return algorithm14(x, y, this, false);
},
'number | Complex | BigNumber, Array': function numberComplexBigNumberArray(x, y) {
// use matrix implementation
return algorithm14(matrix(y), x, this, true).valueOf();
}
});
});