exponentiation

[timotheecour]

D20200325T154113

• [x] we need integer exponentiation in stdlib EDIT: this is: math.^

• [ ] best? https://gist.github.com/orlp/3551590 more optimized than the squaring version

  Ah, the old Duff's device.

• http://www.cplusplus.com/reference/cmath/pow/

• https://stackoverflow.com/questions/20872689/how-to-raise-to-the-power-of/20872712

• https://stackoverflow.com/questions/41403730/c-exponentiation-with-non-integer-exponent

• https://stackoverflow.com/questions/101439/the-most-efficient-way-to-implement-an-integer-based-power-function-powint-int

• https://en.wikipedia.org/wiki/Exponentiation_by_squaring

js

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/pow https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Browser_compatibility https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Browser_compatibility

revisit this:

https://github.com/nim-lang/Nim/pull/12455

[ringabout]

Integer pow already exists in JS backend:

import jscore

echo Math.pow(2, 4)  

[timotheecour]

Integer pow already exists in JS backend:

note that output is a float, not the original type (yes, they map to js Number, but the nim type matters)

[ringabout]

Natural pow exists

import math

echo 2 ^ 2
# 4