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prettify

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This commit is contained in:
Lucia Ceionia
2025-12-06 15:55:16 -06:00
parent e71c742863
commit 75a8e72093
2 changed files with 122 additions and 7 deletions
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121
day6.c
View File

@@ -1,6 +1,7 @@
#include "lib.h"
#define DBG 1
#define DBG 0
#define PRETTY 1
static
ch input[] = {
@@ -12,18 +13,44 @@ ch test[] = {
#embed "day6_test.txt"
};
#if PRETTY
struct line {
union {
ch l[24];
struct {
ch vs[16];
ch pad[4];
num v;
};
};
} __attribute__((aligned(0x40)));
static_assert(alignof(struct line) == 0x40);
#endif
#if PRETTY
alignas(0x40) static
struct line linemem[6];
struct line *const op_line = &linemem[1];
struct line *const a_line = &linemem[2];
struct line *const b_line = &linemem[3];
struct line *const result_line = &linemem[4];
#endif
static
num do_part1(size_t file_len, ch file[file_len]) {
ch *s = file;
num result = 0;
#if PRETTY
memset(linemem, 0, sizeof(linemem));
snprintd(result, 16, result_line->vs);
#endif
#if DBG
print("\n");
#endif
while (*s != 10) s++;
num stride = s - file + 1;
s = memchr(s, '\n', file_len);
num stride = s - file;
s = file;
while (*s != '+' && *s != '*') s += stride;
@@ -45,38 +72,74 @@ num do_part1(size_t file_len, ch file[file_len]) {
if (s[op_off] == '+') {
num a = 0;
num rem = height;
#if PRETTY
op_line->vs[15] = '+';
a_line->v = a;
snprintd(a, 16, a_line->vs);
*b_line = (struct line){ };
#endif
do {
ch *t = s + ledge_off;
while (*t < '0') t++;
num b = grabnum(t, NULL);
#if PRETTY
b_line->v = b;
snprintd(b, 16, b_line->vs);
#endif
#if DBG
if (rem < height) { print("\t+\t"); }
printd(b);
#endif
a += b;
#if PRETTY
a_line->v = a;
snprintd(a, 16, a_line->vs);
#endif
ledge_off += stride;
rem--;
} while (rem);
result += a;
#if PRETTY
result_line->v = result;
snprintd(result, 16, result_line->vs);
#endif
#if DBG
print("\t= "); printd(a); print("\n");
#endif
} else if (s[op_off] == '*') {
num a = 1;
#if PRETTY
op_line->vs[15] = '*';
a_line->v = a;
snprintd(a, 16, a_line->vs);
*b_line = (struct line){ };
#endif
num rem = height;
do {
ch *t = s + ledge_off;
while (*t < '0') t++;
num b = grabnum(t, NULL);
#if PRETTY
b_line->v = b;
snprintd(b, 16, b_line->vs);
#endif
#if DBG
if (rem < height) { print("\t*\t"); }
printd(b);
#endif
a *= b;
#if PRETTY
a_line->v = a;
snprintd(a, 16, a_line->vs);
#endif
ledge_off += stride;
rem--;
} while (rem);
result += a;
#if PRETTY
result_line->v = result;
snprintd(result, 16, result_line->vs);
#endif
#if DBG
print("\t= "); printd(a); print("\n");
#endif
@@ -95,6 +158,12 @@ num do_part1(size_t file_len, ch file[file_len]) {
}
} while (op_off < file_len);
#if PRETTY
*op_line = (struct line){ };
*a_line = (struct line){ };
*b_line = (struct line){ };
#endif
return result;
}
@@ -103,12 +172,16 @@ num do_part2(size_t file_len, unsigned char file[file_len]) {
ch *s = file;
num result = 0;
#if PRETTY
memset(linemem, 0, sizeof(linemem));
snprintd(result, 16, result_line->vs);
#endif
#if DBG
print("\n");
#endif
while (*s != 10) s++;
num stride = s - file + 1;
s = memchr(s, '\n', file_len);
num stride = s - file;
s = file;
while (*s != '+' && *s != '*') s += stride;
@@ -139,6 +212,12 @@ num do_part2(size_t file_len, unsigned char file[file_len]) {
num a = 0;
num rem = redge_off - ledge_off + 1;
num frem = rem;
#if PRETTY
op_line->vs[15] = '+';
a_line->v = a;
snprintd(a, 16, a_line->vs);
*b_line = (struct line){ };
#endif
do {
num b = 0;
ch *t = s + redge_off;
@@ -148,6 +227,10 @@ num do_part2(size_t file_len, unsigned char file[file_len]) {
b += *t - '0';
}
}
#if PRETTY
b_line->v = b;
snprintd(b, 16, b_line->vs);
#endif
#if DBG
if (rem < frem) { print("\t+\t"); }
printd(b);
@@ -157,6 +240,10 @@ num do_part2(size_t file_len, unsigned char file[file_len]) {
rem--;
} while (rem);
result += a;
#if PRETTY
result_line->v = result;
snprintd(result, 16, result_line->vs);
#endif
#if DBG
print("\t=\t"); printd(a); print("\n");
#endif
@@ -164,6 +251,12 @@ num do_part2(size_t file_len, unsigned char file[file_len]) {
num a = 1;
num rem = redge_off - ledge_off + 1;
num frem = rem;
#if PRETTY
op_line->vs[15] = '*';
a_line->v = a;
snprintd(a, 16, a_line->vs);
*b_line = (struct line){ };
#endif
do {
num b = 0;
ch *t = s + redge_off;
@@ -173,6 +266,10 @@ num do_part2(size_t file_len, unsigned char file[file_len]) {
b += *t - '0';
}
}
#if PRETTY
b_line->v = b;
snprintd(b, 16, b_line->vs);
#endif
#if DBG
if (rem < frem) { print("\t*\t"); }
printd(b);
@@ -182,6 +279,10 @@ num do_part2(size_t file_len, unsigned char file[file_len]) {
rem--;
} while (rem);
result += a;
#if PRETTY
result_line->v = result;
snprintd(result, 16, result_line->vs);
#endif
#if DBG
print("\t=\t"); printd(a); print("\n");
#endif
@@ -195,11 +296,17 @@ num do_part2(size_t file_len, unsigned char file[file_len]) {
prev_op_off = op_off;
} while (prev_op_off != fop_off);
#if PRETTY
*op_line = (struct line){ };
*a_line = (struct line){ };
*b_line = (struct line){ };
#endif
return result;
}
#define RUN_TEST1 1
#define RUN_PART1 1
#define RUN_TEST1 0
#define RUN_PART1 0
#define RUN_TEST2 1
#define RUN_PART2 1

8
lib.h
View File

@@ -9,6 +9,14 @@
#define STDOUT_FILENO 1
__attribute__((always_inline))
void *memchr(const void *s, int c, size_t n) {
uint64_t dispose;
void *d;
asm("repnz scasb":"=D"(d),"=c"(dispose):"D"(s),"c"(n),"a"(c):"memory","cc");
return d;
}
static
void write(uint64_t fileno, void *buffer, size_t len) {
uint64_t a,d;