Commit fd6d278

Author	Mitja Felicijan <mitja.felicijan@gmail.com>	2025-03-29 01:39:29 +0100
Committer	Mitja Felicijan <mitja.felicijan@gmail.com>	2025-03-29 01:39:29 +0100
Commit	`fd6d278926495633fb0194e9520eb65fad91c502` (patch)

6 files changed, 77 insertions, 0 deletions

diff --git a/README.md b/README.md
...
42	\| [c-bluetooth](./c-bluetooth) \| clang-17 \| Scans for all Bluetooth devices. \|	42	\| [c-bluetooth](./c-bluetooth) \| clang-17 \| Scans for all Bluetooth devices. \|
43	\| [d-x11](./d-x11) \| dmd-2.110 \| Uses X11 to create a basic window without any bindings needed. \|	43	\| [d-x11](./d-x11) \| dmd-2.110 \| Uses X11 to create a basic window without any bindings needed. \|
44	\| [d-bmp-header](./d-bmp-header) \| dmd-2.110 \| Reads BMP image header and prints the information out. \|	44	\| [d-bmp-header](./d-bmp-header) \| dmd-2.110 \| Reads BMP image header and prints the information out. \|
		45	\| [c-luajit](./c-luajit) \| clang-19 \| Testing execution speed of Lua vs Luajit vs embedded Luajit. \|
45		46
46	## License	47	## License
47		48
...

diff --git a/c-luajit/.gitignore b/c-luajit/.gitignore
	1	fibonacci
	2	fibonacci.luac

diff --git a/c-luajit/Makefile b/c-luajit/Makefile
	1	# Requires: sudo dnf install lua-devel luajit-devel
	2
	3	all: normal jit embedded
	4
	5	normal:
	6	bash -c "time lua fibonacci.lua && echo"
	7
	8	jit:
	9	luajit -b fibonacci.lua fibonacci.luac
	10	bash -c "time luajit fibonacci.luac && echo"
	11
	12	embedded:
	13	cc -o fibonacci fibonacci.c `pkg-config --cflags --libs luajit`
	14	bash -c "time ./fibonacci && echo"
	15
	16	clean:
	17	@rm fibonacci fibonacci.luac

diff --git a/c-luajit/fibonacci.c b/c-luajit/fibonacci.c
	1	#include <lua.h>
	2	#include <lualib.h>
	3	#include <lauxlib.h>
	4
	5	int main(int argc, char **argv) {
	6	lua_State *L = luaL_newstate();
	7	luaL_openlibs(L);
	8	if (luaL_loadfile(L, "fibonacci.luac") \|\| lua_pcall(L, 0, 0, 0)) {
	9	fprintf(stderr, "Error: %s\n", lua_tostring(L, -1));
	10	return 1;
	11	}
	12	lua_close(L);
	13	return 0;
	14	}

diff --git a/c-luajit/fibonacci.lua b/c-luajit/fibonacci.lua
	1	-- Naive recursive implementation to increase the time of computation.
	2	function fibonacci(n)
	3	if n == 0 then
	4	return 0
	5	elseif n == 1 then
	6	return 1
	7	else
	8	return fibonacci(n - 1) + fibonacci(n - 2)
	9	end
	10	end
	11
	12	local n = 40
	13	local result = fibonacci(n)
	14	print("The " .. n .. "th Fibonacci number is: " .. result)
	15

diff --git a/c-luajit/measurements.txt b/c-luajit/measurements.txt
	1	* Running with just normal Lua
	2
	3	$ time lua fibonacci.lua
	4	The 40th Fibonacci number is: 102334155
	5
	6	real 0m5.601s
	7	user 0m5.590s
	8	sys 0m0.001s
	9
	10	* Running with Luajit
	11
	12	$ luajit -b fibonacci.lua fibonacci.luac
	13	$ time luajit fibonacci.luac
	14	The 40th Fibonacci number is: 102334155
	15
	16	real 0m1.050s
	17	user 0m1.047s
	18	sys 0m0.001s
	19
	20	* Running with Luajit embedded into C
	21
	22	$ cc -o fibonacci fibonacci.c `pkg-config --cflags --libs luajit`
	23	$ time ./fibonacci
	24	The 40th Fibonacci number is: 102334155
	25
	26	real 0m1.033s
	27	user 0m1.031s
	28	sys 0m0.000s