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