| // Public Domain under http://unlicense.org, see link for details. | |
| // except: | |
| // * core-math function `cr_cbrtf` (see license below) | |
| // * musl flavored fdlib function `fdlibm_cbrtf` (see license below) | |
| // code and test driver for cube root and it's reciprocal based on: | |
| // "Fast Calculation of Cube and Inverse Cube Roots Using | |
| // a Magic Constant and Its Implementation on Microcontrollers" | |
| // Moroz, Samotyy, Walczyk, Cieslinski, 2021 | |
| // (PDF: https://www.mdpi.com/1996-1073/14/4/1058) |
As C programmers, most of us think of pointer arithmetic for multi-dimensional arrays in a nested way:
The address for a 1-dimensional array is base + x.
The address for a 2-dimensional array is base + x + y*x_size for row-major layout and base + y + x*y_size for column-major layout.
The address for a 3-dimensional array is base + x + (y + z*y_size)*x_size for row-column-major layout.
And so on.
