Annotation of dietlibc/t.c, revision 1.25
1.1 cvs 1: #include <unistd.h>
2: #include <endian.h>
3: #include <stdlib.h>
4: #include <dirent.h>
5: #include <pwd.h>
6: #include <stdio.h>
7: #include <assert.h>
8: #include <sys/mount.h>
1.7 fefe 9: #include <time.h>
1.9 fefe 10: #include <sys/stat.h>
1.10 fefe 11: #include <stdio.h>
1.12 fefe 12: #include <arpa/inet.h>
1.13 fefe 13: #include <sys/sem.h>
1.14 fefe 14: #include <sys/shm.h>
1.17 fefe 15: #include <math.h>
1.20 fefe 16: #include <termios.h>
1.22 fefe 17: #include <netdb.h>
1.1 cvs 18:
1.17 fefe 19: #if 0
1.16 fefe 20: int compint(const void *a,const void *b) {
21: /* printf("comparing %d with %d\n",*(int*)a,*(int*)b); */
22: return (*(int*)a-*(int*)b);
23: }
24:
25: #define SIZE 100000
26: #define LOOKFOR ((SIZE/2)-2)
27:
28: int array[SIZE];
29:
30: #define rdtscl(low) \
31: __asm__ __volatile__ ("rdtsc" : "=a" (low) : : "edx")
32:
33: static unsigned int seed=1;
34:
35: static int rand() {
36: return ((seed = seed * 1103515245 + 12345) % ((unsigned int)RAND_MAX + 1));
37: }
1.17 fefe 38: #endif
1.16 fefe 39:
1.24 fefe 40: extern double atof(const char *c);
41:
1.12 fefe 42: int main(int argc,char *argv[]) {
1.25 ! fefe 43: struct hostent *foo=gethostbyname("zeit.fu-berlin.de");
! 44: if (foo)
! 45: printf("%s -> %s\n",foo->h_name,inet_ntoa(*(struct in_addr*)foo->h_addr));
1.22 fefe 46: /* printf("%g %g\n",1e-10,1e10); */
1.18 fefe 47: #if 0
1.17 fefe 48: double d=0.0;
49: long long t=0x12345678ABCDEF01;
50: d/=0.0;
51: printf("%d %llx\n",__isnan(d),t,*(long long*)&d);
1.18 fefe 52: #endif
1.17 fefe 53: #if 0
1.16 fefe 54: int i,j;
55: long a,b,c;
56: int *res;
57: printf("%p\n",malloc(0));
58: qsort(array,2,sizeof(int),compint);
59: for (i=0; i<SIZE; ++i)
60: array[i]=rand();
61: rdtscl(a);
62: qsort(array,SIZE,sizeof(int),compint);
63: rdtscl(b);
64: j=array[LOOKFOR];
65: res=bsearch(&j,array,SIZE,sizeof(int),compint);
66: rdtscl(c);
67: printf("%lu cycles sort, %lu cycles bsearch\n",b-a,c-b);
68: for (i=0; i<SIZE-1; ++i)
69: if (array[i]>array[i+1]) {
70: printf("qsort does not work, index %d: %d > %d\n",i,array[i],array[i+1]);
71: return 1;
72: }
73: if (*res!=j)
74: printf("besearch does not work, returned %p (%d) instead of %p (%d)\n",res,res?*res:-1,array+LOOKFOR,j);
75: /* printf("array={%d,%d,%d,%d,%d}\n",array[0],array[1],array[2],array[3],array[4]); */
1.17 fefe 76: #endif
1.13 fefe 77: #if 0
1.12 fefe 78: struct in_addr duh;
79: printf("%d\n",inet_aton(argv[1]?argv[1]:"10.0.0.1",&duh));
80: printf("%x\n",duh.s_addr);
1.13 fefe 81: #endif
1.12 fefe 82: /* printf("%-19s %10lu %9lu %9lu %3d%% %s\n","/dev/ide/host0/bus0/target0/lun0/part2",8393688,705683,1337084,85,"/"); */
1.11 fefe 83: #if 0
1.10 fefe 84: char buf[100];
85: fgets(buf,100,stdin); printf("got %d bytes\n",strlen(buf));
86: fgets(buf,100,stdin); printf("got %d bytes\n",strlen(buf));
1.11 fefe 87: #endif
1.9 fefe 88: #if 0
1.7 fefe 89: struct tm duh;
90: time_t t;
1.8 fefe 91: time(&t);
92: gmtime_r(&t,&duh);
93: printf("%s\n",asctime(&duh));
1.9 fefe 94: #endif
1.8 fefe 95: #if 0
1.7 fefe 96: char buf[30];
97: duh.tm_sec=42;
98: duh.tm_min=23;
99: duh.tm_hour=17;
100: duh.tm_mday=2;
101: duh.tm_mon=7;
102: duh.tm_year=100;
103: t=mktime(&duh);
104: printf("%s\n",asctime_r(&duh,buf));
1.8 fefe 105: #endif
1.2 fefe 106: #if 0
1.1 cvs 107: int i;
108: for (i=0; i<5; i++) {
109: fprintf(stdout,"first message\n");
110: fprintf(stdout,"second message\n");
111: fprintf(stdout,"third message\n");
112: printf("foo %d\n",i);
113: }
1.2 fefe 114: #endif
1.1 cvs 115: #if 0
116: char buf[1024];
117: sscanf("foo bar","%s",buf);
118: printf("%s\n",buf);
119: #endif
120: #if 0
121: mount("/dev/scsi/host0/bus0/target2/lun0/cd", "/cd", "iso9660", MS_MGC_VAL|MS_RDONLY, NULL);
122: perror("mount");
123: #endif
124: #if 0
125: char *t="<4>Linux version 2.4.0-test10 (leitner@hellhound) (gcc version 2.95.2 19991024 (release))";
126: int i=strtol(t+1,&t,10);
127: printf("%d %s\n",i,t);
128: #endif
129: #if 0
130: char **tmp;
131: putenv("FOO");
132: assert(1==2);
133: for (tmp=environ; *tmp; tmp++)
134: puts(*tmp);
135: #endif
136: #if 0
137: char buf[1024];
138: printf("%d\n",fprintf(stderr,"duh\n"));
139: #endif
140: #if 0
141: struct passwd *p=getpwuid(100);
142: puts(p->pw_name);
143: #endif
144: #if 0
145: int pid;
146: char name[32];
147: sscanf("1 (init","%d (%15c",&pid,name);
148: printf("pid %d name %s\n",pid,name);
149: #endif
150: #if 0
151: DIR *d=opendir("/proc");
152: if (d) {
153: struct dirent *D;
154: while (D=readdir(d))
155: puts(D->d_name);
156: closedir(d);
157: }
158: #endif
159: #if 0
160: char buf[1024];
161: int fd=open("/etc/passwd",0);
162: pread(fd,buf,30,32);
163: close(fd);
164: write(1,buf,32);
165: #endif
166: #if 0
167: char *argv[] = {"echo","foo",0};
168: char buf[100];
169: buf[5]='x';
170: sprintf(buf,"foo\n");
171: if (buf[5] == 'x')
172: exit(0);
173: else
174: exit(1);
175: execvp(argv[0],argv);
176: #endif
1.10 fefe 177: #if 0
1.1 cvs 178: struct stat64 f;
179: char buf[128];
180: fstat64(0,&f);
181: fprintf(stderr,"%d %d\n",f.st_size,sizeof(f));
182: return 0;
183: #endif
184: #if 0
185: FILE *f=fopen("foo","w");
186: fputc('a',f);
187: fputc('b',f);
188: fputc('c',f);
189: #endif
190: /* fprintf(stdout,"foo\n"); */
191: }
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