`std/math`

Integer math helpers.

#include "std/math"

Integer only

Gofra has no floating-point types yet. This module provides integer-only math.

Powers

pub func int ipow[int base, int exponent]

Integer power base^exponent. Negative exponents return 0.

2 10 ipow    // 1024

Alias for ipow:

#define pow ipow

pub func int isqrt[int n]

Integer square root (floor), using the Babylonian method.

16 isqrt    // 4
17 isqrt    // 4

Alias for isqrt:

#define sqrt isqrt

pub func int abs[int x]

Absolute value of an integer.

-5 abs    // 5
5 abs     // 5

pub func int min[int a, int b]

Minimum of two values.

pub func int max[int a, int b]

Maximum of two values.

pub func int sign[int x]

Sign of a value: -1, 0, or 1.

pub func int clamp[int n, int a, int b]

Clamps n to the range [a, b].

15 0 10 clamp    // 10
-5 0 10 clamp    // 0
5 0 10 clamp     // 5

pub func int factorial[int n]

Factorial n!.

5 factorial    // 120

pub func int align_up[int size, int alignment]

Rounds size up to the next multiple of alignment.

10 8 align_up    // 16

pub func int align_down[int size, int alignment]

Rounds size down to the previous multiple of alignment.

10 8 align_down    // 8