advent2025

commit b4766bd83a5a6a8673e34578a6ca93bfe0ea424c
parent 72036c6737f5a82db7241c7717d816e9e37a90d0
Author: bsandro <email@bsandro.tech>
Date:   Tue,  9 Dec 2025 21:30:28 +0200

removed .pbm generation code

Diffstat:
M
day09.c
 | 
79
-------------------------------------------------------------------------------

1 file changed, 0 insertions(+), 79 deletions(-)
diff --git a/day09.c b/day09.c
@@ -1,14 +1,7 @@
-#define _GNU_SOURCE
-#define __USE_GNU 1
-#include <errno.h>
-#include <unistd.h>
-#include <fcntl.h>
 #include <stdio.h>
 #include <inttypes.h>
 #include <stdlib.h>
-#include <math.h>
 #include <stdbool.h>
-#include <string.h>
 #include "cputime.h"
 
 #define MAX(a,b) (((a)>(b))?(a):(b))
@@ -113,76 +106,6 @@ static int get_max_x(int points_l, Point points[points_l]) {
     return maxx;
 }
 
-void gen_pbm(int lines_l, Line lines[lines_l]) {
-    Point min = {0};
-    Point max = {0};
-    for (int i=0;i<lines_l;++i) {
-        if (lines[i].p1.x<min.x) min.x=lines[i].p1.x;
-        if (lines[i].p2.x<min.x) min.x=lines[i].p2.x;
-        if (lines[i].p1.y<min.y) min.y=lines[i].p1.y;
-        if (lines[i].p2.y<min.y) min.y=lines[i].p2.y;
-        if (lines[i].p1.x>max.x) max.x=lines[i].p1.x;
-        if (lines[i].p2.x>max.x) max.x=lines[i].p2.x;
-        if (lines[i].p1.y>max.y) max.y=lines[i].p1.y;
-        if (lines[i].p2.y>max.y) max.y=lines[i].p2.y;
-    }
-    int w = max.x+3; //-min.x;
-    int h = max.y+3; //-min.y;
-    printf("%dx%d\n",w,h);
-    int f = open("day09.pbm", O_CREAT | O_WRONLY | O_TRUNC, 0666);
-    //fcntl(f, F_NOCACHE, 1);
-    char header[64] = {0};
-    int n = snprintf(header, sizeof(header), "P1\n%d %d\n", w, h);
-    if (write(f, header, n)!=n) {
-        printf("error: %d\n", errno);
-        exit(1);
-    }
-    puts("header write ok");
-    size_t len = sizeof(char)*w*h;
-    printf("size: %zu\n", len);
-    char *pic = malloc(len);
-    if (pic==NULL) { printf("error: %d\n", errno); exit(1); }
-    memset(pic, '0', len);
-    puts("malloc ok");
-    for (int i=0;i<lines_l;++i) {
-        Point p1 = lines[i].p1;
-        Point p2 = lines[i].p2;
-        if (p1.x==p2.x) {
-            int miny = MIN(p1.y, p2.y);
-            int maxy = MAX(p1.y, p2.y);
-            for (int y=miny;y<=maxy;++y) {
-                size_t offset = (size_t)y*w + p1.x;
-                if (offset>=len) { printf("invalid offset y %zu\n", offset); exit(1); }
-                pic[offset] = '1';
-            }
-        } else if (p1.y==p2.y) {
-            int minx = MIN(p1.x, p2.x);
-            int maxx = MAX(p1.x, p2.x);
-            for (int x=minx;x<=maxx;++x) {
-                size_t offset = ((size_t)p1.y*w) + x;
-                if (offset >= len) {
-                    printf("invalid offset x %zu (y=%d,w=%d,minmax=%d-%d,x=%d,len=%zu,t=%zu)\n", offset, p1.y,w,minx,maxx,x,len, ((size_t)p1.y*w)+x);
-                    exit(1);
-                }
-                pic[offset] = '1';
-            }
-        }
-    }
-    puts("pic generate ok");
-    //fsync(f);
-    //if (write(f, pic, len) != (int)len) ("error writing file");
-    size_t chunk = sizeof(char) * 1024 * 1024 * 10;
-    if (chunk>len) chunk=len;
-    printf("chunk: %zu\n", chunk);
-    for (size_t i=0;i<len;i += chunk) {
-        if (len!=chunk && len/chunk == 0) chunk = len%chunk;
-        printf("write chunk %zu of size %zu (real %d)\n", i, chunk, n);
-        n = write(f, pic+i, chunk);
-    }
-    fsync(f);
-    close(f);
-}
-
 int main(void) {
     int64_t part1 = 0;
     int64_t part2 = 0;
@@ -214,8 +137,6 @@ int main(void) {
         lines[lines_l++] = (Line){ points[i], points[i+1] };
     }
     lines[lines_l++] = (Line){ points[0], points[points_l-1] };
-    //gen_pbm(lines_l, lines);
-    (void)gen_pbm;
     int squares_max = (points_l*points_l-points_l)/2;
     int64_t squares[squares_max];
     int squares_l = 0;