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@davidkpiano
Last active February 12, 2022 02:29
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Generated by SassMeister.com.
// ----
// Sass (v3.4.11)
// Compass (v1.0.3)
// ----
@function math-pow($number, $exp) {
@if (round($exp) != $exp) {
@return math-exp($exp * math-ln($number));
}
// Traditional method for integers
$value: 1;
@if $exp > 0 {
@for $i from 1 through $exp {
$value: $value * $number;
}
}
@else if $exp < 0 {
@for $i from 1 through -$exp {
$value: $value / $number;
}
}
@return $value;
}
@function math-factorial($value) {
@if $value == 0 {
@return 1;
}
$result: 1;
@for $index from 1 through $value {
$result: $result * $index;
}
@return $result;
}
@function math-summation($iteratee, $input, $initial: 0, $limit: 100) {
$sum: 0;
@for $index from $initial to $limit {
$sum: $sum + call($iteratee, $input, $index);
}
@return $sum;
}
@function math-exp-maclaurin($x, $n) {
$result: math-pow($x, $n) / math-factorial($n);
@return $result;
}
@function math-exp($value) {
$result: math-summation(math-exp-maclaurin, $value, 0, 100);
@return $result;
}
@function math-ln-maclaurin($x, $n) {
$result: (math-pow(-1, $n + 1) / $n) * (math-pow($x - 1, $n));
@return $result;
}
@function math-ln($value) {
$ten-exp: 1;
$ln-ten: 2.30258509;
@while ($value > math-pow(10, $ten-exp)) {
$ten-exp: $ten-exp + 1;
}
$value: $value / math-pow(10, $ten-exp);
$result: math-summation(math-ln-maclaurin, $value, 1, 100);
@return $result + $ten-exp * $ln-ten;
}
.test {
input: 'math-pow(3, 2)';
expected: 9;
actual: math-pow(3, 2);
input: 'math-pow(4, 3/2)';
expected: 8;
actual: math-pow(4, 3/2);
input: 'math-pow(144, 1/2)';
expected: 12;
actual: math-pow(144, 1/2);
input: 'math-pow(-3, 2)';
expected: 9;
actual: math-pow(-3, 2);
input: 'math-pow(3, -2)';
expected: 0.1111;
actual: math-pow(3, -2);
input: 'math-pow(64, -1/2)';
expected: 0.125;
actual: math-pow(64, -1/2);
input: 'math-pow(12, 3.4)';
expected: 4668.91789313;
actual: math-pow(12, 3.4);
}
.test {
input: 'math-pow(3, 2)';
expected: 9;
actual: 9;
input: 'math-pow(4, 3/2)';
expected: 8;
actual: 8.0;
input: 'math-pow(144, 1/2)';
expected: 12;
actual: 12.0;
input: 'math-pow(-3, 2)';
expected: 9;
actual: 9;
input: 'math-pow(3, -2)';
expected: 0.1111;
actual: 0.11111;
input: 'math-pow(64, -1/2)';
expected: 0.125;
actual: 0.125;
input: 'math-pow(12, 3.4)';
expected: 4668.91789313;
actual: 4668.92127;
}
@jakob-e
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jakob-e commented Jan 31, 2017

Thank you both :-)
@xi hope you don't mind me linking to your sass-planifolia repo :-)

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