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author | Anton Luka Šijanec <anton@sijanec.eu> | 2022-05-04 22:05:37 +0200 |
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committer | Anton Luka Šijanec <anton@sijanec.eu> | 2022-05-04 22:05:37 +0200 |
commit | 67ec51041e49881bc9e5aa0dd90121e20023367b (patch) | |
tree | ab4a2c276b272b2547f37a1c8cfacede9c00a5c7 /mat/programčki/ničle.singlethreaded16bit.c | |
parent | fizproj (diff) | |
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Diffstat (limited to 'mat/programčki/ničle.singlethreaded16bit.c')
-rw-r--r-- | mat/programčki/ničle.singlethreaded16bit.c | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/mat/programčki/ničle.singlethreaded16bit.c b/mat/programčki/ničle.singlethreaded16bit.c index 49d53a6..eb1f672 100644 --- a/mat/programčki/ničle.singlethreaded16bit.c +++ b/mat/programčki/ničle.singlethreaded16bit.c @@ -27,22 +27,38 @@ int main (int argc, char ** argv) { perror("open"); return 2; } - if (ftruncate(fd, 128 + šir*šir*2) == -1) { + if (ftruncate(fd, 128 + šir*šir +#ifdef SESTNAJST + *2 +#endif + ) == -1) { perror("ftruncate"); if (close(fd) == -1) perror("close"); return 3; } void * p; - if ((p = mmap(NULL, 128+šir*šir*2, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) { + if ((p = mmap(NULL, 128+šir*šir +#ifdef SESTNAJST + *2 +#endif + , PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) { perror("mmap"); if (close(fd) == -1) perror("close"); return 4; } unsigned char * slika = (unsigned char *) p + 128; - memset(p, 0, 128 + šir*šir*2); + memset(p, 0, 128 + šir*šir +#ifdef SESTNAJST + *2 +#endif + ); +#ifdef SESTNAJST sprintf(p, "P5\n\n%58lld\n%58lld\n65535\n", šir, šir); // precisely calculated with dc(1) (: +#else + sprintf(p, "P5\n\n%57lld\n%57lld\n255\n", šir, šir); +#endif long long int stopnja = atoi(argv[1]); double koeficienti[stopnja+1]; // kako prikladno! polinom nte stopnje ima n+1 členov double ničle[2*stopnja]; // ima pa n ničel, 2n so realni deli, 2n+1 pa imagin @@ -66,6 +82,7 @@ int main (int argc, char ** argv) { izven_slike++; continue; } +#ifdef SESTNAJST slika[2*šir*višina_na_sliki+širina_na_sliki*2+1]++; if (!slika[2*šir*višina_na_sliki+širina_na_sliki*2+1]) { if (slika[2*šir*višina_na_sliki+širina_na_sliki*2] != 255) @@ -73,11 +90,21 @@ int main (int argc, char ** argv) { else over++; } +#else + if (slika[šir*višina_na_sliki+širina_na_sliki] == 255) + over++; + else + slika[šir*višina_na_sliki+širina_na_sliki]++; +#endif } } fprintf(stderr, "\r KONČANO \n"); gsl_poly_complex_workspace_free(w); - if (munmap(p, 128 + šir*šir) == -1) + if (munmap(p, 128 + šir*šir +#ifdef SESTNAJST + *2 +#endif + ) == -1) perror("munmap"); // nima smisla ukinjat programa, sistem si je sam kriv >:) if (close(fd) == -1) perror("close"); |