diff options
| author | littleblack111 <littleblack11111@gmail.com> | 2023-10-14 15:58:02 +0800 |
|---|---|---|
| committer | littleblack111 <littleblack11111@gmail.com> | 2023-10-14 15:58:02 +0800 |
| commit | fee47f6414cc3ae9a88f3ee0ed20f1d6f2d9f556 (patch) | |
| tree | 2b99dd57fc676a3819ef3cc46ac43df0043c2bb3 /node_modules/math-expression-evaluator/src/math_function.js | |
| parent | 0379526e20e1ff212df23e6326741aa9c06df204 (diff) | |
added plugin from postcss: postcss-fixes rucksack-css
Diffstat (limited to 'node_modules/math-expression-evaluator/src/math_function.js')
| -rw-r--r-- | node_modules/math-expression-evaluator/src/math_function.js | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/node_modules/math-expression-evaluator/src/math_function.js b/node_modules/math-expression-evaluator/src/math_function.js new file mode 100644 index 00000000..97025a00 --- /dev/null +++ b/node_modules/math-expression-evaluator/src/math_function.js @@ -0,0 +1,134 @@ +"use strict";
+var Mexp = function (parsed) {
+ this.value = parsed
+}
+
+Mexp.math = {
+ isDegree: true, // mode of calculator
+ acos: function (x) {
+ return (Mexp.math.isDegree ? 180 / Math.PI * Math.acos(x) : Math.acos(x))
+ },
+ add: function (a, b) {
+ return a + b
+ },
+ asin: function (x) {
+ return (Mexp.math.isDegree ? 180 / Math.PI * Math.asin(x) : Math.asin(x))
+ },
+ atan: function (x) {
+ return (Mexp.math.isDegree ? 180 / Math.PI * Math.atan(x) : Math.atan(x))
+ },
+ acosh: function (x) {
+ return Math.log(x + Math.sqrt(x * x - 1))
+ },
+ asinh: function (x) {
+ return Math.log(x + Math.sqrt(x * x + 1))
+ },
+ atanh: function (x) {
+ return Math.log((1 + x) / (1 - x))
+ },
+ C: function (n, r) {
+ var pro = 1
+ var other = n - r
+ var choice = r
+ if (choice < other) {
+ choice = other
+ other = r
+ }
+ for (var i = choice + 1; i <= n; i++) {
+ pro *= i
+ }
+ return pro / Mexp.math.fact(other)
+ },
+ changeSign: function (x) {
+ return -x
+ },
+ cos: function (x) {
+ if (Mexp.math.isDegree) x = Mexp.math.toRadian(x)
+ return Math.cos(x)
+ },
+ cosh: function (x) {
+ return (Math.pow(Math.E, x) + Math.pow(Math.E, -1 * x)) / 2
+ },
+ div: function (a, b) {
+ return a / b
+ },
+ fact: function (n) {
+ if (n % 1 !== 0) return 'NaN'
+ var pro = 1
+ for (var i = 2; i <= n; i++) {
+ pro *= i
+ }
+ return pro
+ },
+ inverse: function (x) {
+ return 1 / x
+ },
+ log: function (i) {
+ return Math.log(i) / Math.log(10)
+ },
+ mod: function (a, b) {
+ return a % b
+ },
+ mul: function (a, b) {
+ return a * b
+ },
+ P: function (n, r) {
+ var pro = 1
+ for (var i = Math.floor(n) - Math.floor(r) + 1; i <= Math.floor(n); i++) {
+ pro *= i
+ }
+ return pro
+ },
+ Pi: function (low, high, ex) {
+ var pro = 1
+ for (var i = low; i <= high; i++) {
+ pro *= Number(ex.postfixEval({
+ n: i
+ }))
+ }
+ return pro
+ },
+ pow10x: function (e) {
+ var x = 1
+ while (e--) {
+ x *= 10
+ }
+ return x
+ },
+ sigma: function (low, high, ex) {
+ var sum = 0
+ for (var i = low; i <= high; i++) {
+ sum += Number(ex.postfixEval({
+ n: i
+ }))
+ }
+ return sum
+ },
+ sin: function (x) {
+ if (Mexp.math.isDegree) x = Mexp.math.toRadian(x)
+ return Math.sin(x)
+ },
+ sinh: function (x) {
+ return (Math.pow(Math.E, x) - Math.pow(Math.E, -1 * x)) / 2
+ },
+ sub: function (a, b) {
+ return a - b
+ },
+ tan: function (x) {
+ if (Mexp.math.isDegree) x = Mexp.math.toRadian(x)
+ return Math.tan(x)
+ },
+ tanh: function (x) {
+ return Mexp.sinha(x) / Mexp.cosha(x)
+ },
+ toRadian: function (x) {
+ return x * Math.PI / 180
+ },
+ and: function (a, b) {
+ return a & b
+ }
+}
+Mexp.Exception = function (message) {
+ this.message = message
+}
+module.exports = Mexp
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