Annotation of dietlibc/t.c, revision 1.39
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>
1.38 fefe 18: #include <sys/mman.h>
1.1 cvs 19:
1.17 fefe 20: #if 0
1.16 fefe 21: int compint(const void *a,const void *b) {
22: /* printf("comparing %d with %d\n",*(int*)a,*(int*)b); */
23: return (*(int*)a-*(int*)b);
24: }
25:
26: #define SIZE 100000
27: #define LOOKFOR ((SIZE/2)-2)
28:
29: int array[SIZE];
30:
31: #define rdtscl(low) \
32: __asm__ __volatile__ ("rdtsc" : "=a" (low) : : "edx")
33:
34: static unsigned int seed=1;
35:
36: static int rand() {
37: return ((seed = seed * 1103515245 + 12345) % ((unsigned int)RAND_MAX + 1));
38: }
1.17 fefe 39: #endif
1.16 fefe 40:
1.24 fefe 41: extern double atof(const char *c);
42:
1.12 fefe 43: int main(int argc,char *argv[]) {
1.39 ! fefe 44: printf("%g\n",30.0123);
1.38 fefe 45: #if 0
1.37 fefe 46: time_t t=time(0);
47: puts(asctime(localtime(&t)));
1.38 fefe 48: #endif
1.37 fefe 49: #if 0
1.36 fefe 50: struct servent *foo=getservbyname("ident","tcp");
51: if (foo)
52: printf("found service %s on port %d\n",foo->s_name,foo->s_port);
1.37 fefe 53: #endif
1.35 fefe 54: #if 0
1.33 fefe 55: char buf[128];
56: strcpy(buf,"/tmp/foo.XXXXXXX");
57: printf("%d\n",mkstemp(buf));
1.34 fefe 58: printf("%s\n",buf);
59: unlink(buf);
1.35 fefe 60: #endif
1.33 fefe 61: #if 0
1.32 fefe 62: char buf[512]="foo";
63: strncat(buf,"barbaz",3);
64: puts(buf);
1.33 fefe 65: #endif
1.32 fefe 66: #if 0
1.31 fefe 67: time_t oink=time(0);
68: struct tm *duh=localtime(&oink);
69: strftime(buf,512,"%A %B %Y\n",duh);
70: puts(buf);
1.32 fefe 71: #endif
1.31 fefe 72: #if 0
1.28 fefe 73: struct in_addr bar;
74: struct hostent *foo;
1.29 fefe 75: /* inet_aton("160.45.10.8",&bar); */
76: foo=gethostbyname("zeit.fu-berlin.de");
77: /* foo=gethostbyaddr(&bar,4,AF_INET); */
1.30 fefe 78: if (foo)
79: printf("%s -> %s\n",foo->h_name,inet_ntoa(*(struct in_addr*)foo->h_addr));
1.22 fefe 80: /* printf("%g %g\n",1e-10,1e10); */
1.31 fefe 81: #endif
1.18 fefe 82: #if 0
1.17 fefe 83: double d=0.0;
84: long long t=0x12345678ABCDEF01;
85: d/=0.0;
86: printf("%d %llx\n",__isnan(d),t,*(long long*)&d);
1.18 fefe 87: #endif
1.17 fefe 88: #if 0
1.16 fefe 89: int i,j;
90: long a,b,c;
91: int *res;
92: printf("%p\n",malloc(0));
93: qsort(array,2,sizeof(int),compint);
94: for (i=0; i<SIZE; ++i)
95: array[i]=rand();
96: rdtscl(a);
97: qsort(array,SIZE,sizeof(int),compint);
98: rdtscl(b);
99: j=array[LOOKFOR];
100: res=bsearch(&j,array,SIZE,sizeof(int),compint);
101: rdtscl(c);
102: printf("%lu cycles sort, %lu cycles bsearch\n",b-a,c-b);
103: for (i=0; i<SIZE-1; ++i)
104: if (array[i]>array[i+1]) {
105: printf("qsort does not work, index %d: %d > %d\n",i,array[i],array[i+1]);
106: return 1;
107: }
108: if (*res!=j)
109: printf("besearch does not work, returned %p (%d) instead of %p (%d)\n",res,res?*res:-1,array+LOOKFOR,j);
110: /* printf("array={%d,%d,%d,%d,%d}\n",array[0],array[1],array[2],array[3],array[4]); */
1.17 fefe 111: #endif
1.13 fefe 112: #if 0
1.12 fefe 113: struct in_addr duh;
114: printf("%d\n",inet_aton(argv[1]?argv[1]:"10.0.0.1",&duh));
115: printf("%x\n",duh.s_addr);
1.13 fefe 116: #endif
1.12 fefe 117: /* printf("%-19s %10lu %9lu %9lu %3d%% %s\n","/dev/ide/host0/bus0/target0/lun0/part2",8393688,705683,1337084,85,"/"); */
1.11 fefe 118: #if 0
1.10 fefe 119: char buf[100];
120: fgets(buf,100,stdin); printf("got %d bytes\n",strlen(buf));
121: fgets(buf,100,stdin); printf("got %d bytes\n",strlen(buf));
1.11 fefe 122: #endif
1.9 fefe 123: #if 0
1.7 fefe 124: struct tm duh;
125: time_t t;
1.8 fefe 126: time(&t);
127: gmtime_r(&t,&duh);
128: printf("%s\n",asctime(&duh));
1.9 fefe 129: #endif
1.8 fefe 130: #if 0
1.7 fefe 131: char buf[30];
132: duh.tm_sec=42;
133: duh.tm_min=23;
134: duh.tm_hour=17;
135: duh.tm_mday=2;
136: duh.tm_mon=7;
137: duh.tm_year=100;
138: t=mktime(&duh);
139: printf("%s\n",asctime_r(&duh,buf));
1.8 fefe 140: #endif
1.2 fefe 141: #if 0
1.1 cvs 142: int i;
143: for (i=0; i<5; i++) {
144: fprintf(stdout,"first message\n");
145: fprintf(stdout,"second message\n");
146: fprintf(stdout,"third message\n");
147: printf("foo %d\n",i);
148: }
1.2 fefe 149: #endif
1.1 cvs 150: #if 0
151: char buf[1024];
152: sscanf("foo bar","%s",buf);
153: printf("%s\n",buf);
154: #endif
155: #if 0
156: mount("/dev/scsi/host0/bus0/target2/lun0/cd", "/cd", "iso9660", MS_MGC_VAL|MS_RDONLY, NULL);
157: perror("mount");
158: #endif
159: #if 0
160: char *t="<4>Linux version 2.4.0-test10 (leitner@hellhound) (gcc version 2.95.2 19991024 (release))";
161: int i=strtol(t+1,&t,10);
162: printf("%d %s\n",i,t);
163: #endif
164: #if 0
165: char **tmp;
166: putenv("FOO");
167: assert(1==2);
168: for (tmp=environ; *tmp; tmp++)
169: puts(*tmp);
170: #endif
171: #if 0
172: char buf[1024];
173: printf("%d\n",fprintf(stderr,"duh\n"));
174: #endif
175: #if 0
176: struct passwd *p=getpwuid(100);
177: puts(p->pw_name);
178: #endif
179: #if 0
180: int pid;
181: char name[32];
182: sscanf("1 (init","%d (%15c",&pid,name);
183: printf("pid %d name %s\n",pid,name);
184: #endif
185: #if 0
186: DIR *d=opendir("/proc");
187: if (d) {
188: struct dirent *D;
189: while (D=readdir(d))
190: puts(D->d_name);
191: closedir(d);
192: }
193: #endif
194: #if 0
195: char buf[1024];
196: int fd=open("/etc/passwd",0);
197: pread(fd,buf,30,32);
198: close(fd);
199: write(1,buf,32);
200: #endif
201: #if 0
202: char *argv[] = {"echo","foo",0};
203: char buf[100];
204: buf[5]='x';
205: sprintf(buf,"foo\n");
206: if (buf[5] == 'x')
207: exit(0);
208: else
209: exit(1);
210: execvp(argv[0],argv);
211: #endif
1.10 fefe 212: #if 0
1.1 cvs 213: struct stat64 f;
214: char buf[128];
215: fstat64(0,&f);
216: fprintf(stderr,"%d %d\n",f.st_size,sizeof(f));
217: return 0;
218: #endif
219: #if 0
220: FILE *f=fopen("foo","w");
221: fputc('a',f);
222: fputc('b',f);
223: fputc('c',f);
224: #endif
225: /* fprintf(stdout,"foo\n"); */
226: }
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