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louisswarren / easyarg.py
Created February 5, 2024 08:23
Map command line arguments to function arguments in python
View easyarg.py
import sys
def foo(*args, **kwargs):
argstr = list(map(repr, args))
kwargstr = [f'{key}={repr(value)}' for key, value in kwargs.items()]
print("foo(", ", ".join(argstr + kwargstr), ")", sep="")
def easyarg(f):
opts = {}
for i in range(1, len(sys.argv)):
@louisswarren
louisswarren / Makefile
Last active December 24, 2023 02:05
Fullwidth text conversion without libc
View Makefile
CFLAGS = -ffreestanding -fno-stack-protector
LDFLAGS = -nostdlib -static
fullwidth-freestanding: fullwidth-freestanding.o
fullwidth-freestanding.o: fullwidth-freestanding.c
@louisswarren
louisswarren / conn4.c
Last active December 14, 2023 08:09
Simulate connect 4
View conn4.c
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#define ENABLE_MOVE_COUNTER
struct game {
uint8_t col[2][7];
@louisswarren
louisswarren / fib.py
Last active August 11, 2023 11:19
How many steps does it take to compute the fibbonacci sequence recursively?
View fib.py
def fib_recursive(n, _mem={1: (1, 1), 2: (1, 1)}):
if n not in _mem:
a, x = fib_recursive(n - 2)
b, y = fib_recursive(n - 1)
_mem[n] = (a + b), (x + y + 1)
return _mem[n]
for i in range(1, 101):
f, n = fib_recursive(i)
print(f"{i:>3}: {f:>21} ({n:>21} steps)")
@louisswarren
louisswarren / Makefile
Last active September 3, 2023 03:10
PSX emulation
View Makefile
CFLAGS = -Wall -Warray-bounds=2 -Wcast-align=strict -Wcast-qual -Wconversion -Wno-sign-conversion -Wdangling-else -Wdate-time -Wdouble-promotion -Wextra -Wfloat-conversion -Wformat-overflow=2 -Wformat-signedness -Wformat-truncation=2 -Wformat=2 -Winit-self -Wjump-misses-init -Wlogical-op -Wmissing-include-dirs -Wnested-externs -Wnull-dereference -Wpacked -Wpedantic -Wredundant-decls -Wshadow -Wshift-negative-value -Wshift-overflow=2 -Wstrict-aliasing -Wstrict-overflow=2 -Wstrict-prototypes -Wstringop-overflow=4 -Wstringop-truncation -Wswitch-default -Wswitch-enum -Wuninitialized -Wunsafe-loop-optimizations -Wunused -Wuse-after-free=3 -Wwrite-strings -fanalyzer -fmax-errors=2 -pedantic-errors
.PHONY: default
default: test
.PHONY: test
test: xods
./$< < /dev/null | diff expected.log - | head -n40
xods.o: xods.c instructions.h
@louisswarren
louisswarren / omp.c
Created August 4, 2023 06:40 — forked from milesrout/omp.c
View omp.c
// Hello
@louisswarren
louisswarren / asm_diff.diff
Last active February 13, 2024 08:21
Type-checked units in C
View asm_diff.diff
--- units.asm 2023-06-18 12:02:32.313569952 +1200
+++ units_unsafe.asm 2023-06-18 12:02:32.313569952 +1200
@@ -1,7 +1,7 @@
-metres_from_feet(feet):
+metres_from_feet(double):
divsd xmm0, QWORD PTR .LC0[rip]
ret
-feet_from_metres(metres):
+feet_from_metres(double):
mulsd xmm0, QWORD PTR .LC0[rip]
@louisswarren
louisswarren / Makefile
Last active June 12, 2023 08:39
ctypes example
View Makefile
.PHONY: default
default: out.png
%.png: %.ppm
convert $< $@
out.ppm: draw.py image.so
python3 $< > $@
image.so: image.c
@louisswarren
louisswarren / Makefile
Last active March 10, 2023 23:17
Include files at compile time in C
View Makefile
.PHONY: test
test: main
./$<
main: main.o incl_hello.o incl_message.o
main.o: main.c include_file.h
incl_%.o: incl_%.txt
@# If you always want to use includes as strings, you can check that
@# they are null-terminated at compile-time:
@louisswarren
louisswarren / trim.sh
Created February 9, 2023 00:29
Trim audio files with fade
View trim.sh
#!/bin/sh
# Usage:
# trim FILE START END FADE_IN FADE_OUT
# 1 2 3 4 5
# Trim the file between START and END, with fade in and out, and
# 2 seconds of silence after
dur=`expr "${3%:*}" \* 60 + "${3#*:}" - "${2%:*}" \* 60 - "${2#*:}"`
fo=`expr "$dur" - $5`