Daniel Nickel nickel-dev
nickel-dev
/ vector.h
Last active
September 14, 2024 08:48
Single header game vectors in C using 100 lines of meta programming
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| // Types | |
| #define TEMPLATE_Vec2t(t) \ | |
| typedef union Vec2##t {\ | |
| struct {t x, y;};\ | |
| t e[2];\ | |
| } Vec2##t; | |
| #define TEMPLATE_Vec3t(t) \ | |
| typedef union Vec3##t {\ | |
| struct {t x, y, z;};\ |
nickel-dev
/ hashmap.c
Created
September 27, 2024 20:32
Linear search Hashmap using linked lists in C, is uses my base layer.
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| intern u64 | |
| hash_str(const char* str) { | |
| u64 hash = 14695981039346656037ULL; // FNV offset basis | |
| i32 c; | |
| while ((c = *str++)) { | |
| hash ^= (u64)c; | |
| hash *= 1099511628211ULL; // FNV prime | |
| } | |
| return hash; | |
| } |
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| // creates a variable called "__defer + line number" this variable is destructed at the end of the scope. | |
| // on destruction it calls a lambda function that was generated by the macro. | |
| // example: | |
| // This program outputs "x: 1" | |
| /* | |
| { | |
| int x = 0; | |
| defer(printf("x: %d\n", x)); | |
| x++; |