mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-18 11:33:23 +02:00
173 lines
5.0 KiB
C
173 lines
5.0 KiB
C
#include "postgres.h"
|
|
#include "varbit.h"
|
|
#include <stdio.h>
|
|
|
|
const int numb = 8;
|
|
/*
|
|
const char *b[] = { "B0010", "B11011011", "B0001", "X3F12", "X27", "B",
|
|
"X11", "B100111"};
|
|
int atttypmod[] = {-1, -1, -1,-1,-1,-1,-1,-1 };
|
|
*/
|
|
const char *b[] = { "B0010", "B11011011", "B10001", "X3D12", "X27", "B",
|
|
"X11", "B100111"};
|
|
int atttypmod[] = { 7, 9, 6, 18, 11, 6, -1, -1 };
|
|
|
|
|
|
void print_details (unsigned char *s)
|
|
{
|
|
int i;
|
|
printf ("Length in bytes : %d\n",VARSIZE(s));
|
|
printf ("Length of bitstring: %d\n",VARBITLEN(s));
|
|
for (i=8; i<VARSIZE(s); i++)
|
|
printf ("%X%X ",s[i]>>4,s[i]&0xF);
|
|
printf("\n");
|
|
}
|
|
|
|
void
|
|
main ()
|
|
{
|
|
int i, j;
|
|
char *s[numb];
|
|
|
|
for (i=0; i<numb; i++) {
|
|
printf ("Input: %s\n",b[i]);
|
|
s[i] = zpbitin(b[i], 0, atttypmod[i]);
|
|
//print_details(s[i]);
|
|
printf ("%s = %s\n",zpbitout(s[i]),zpbitsout(s[i]));
|
|
}
|
|
|
|
printf ("\nCOMPARISONS:\n");
|
|
for (i=0; i<numb; i++)
|
|
for (j=i+1; j<numb; j++)
|
|
printf("%s <=> %s = %d\n",zpbitsout(s[i]),zpbitsout(s[j]),
|
|
bitcmp(s[i],s[j]));
|
|
|
|
printf ("\nCONCATENATION:\n");
|
|
for (i=0; i<numb; i++)
|
|
for (j=i+1; j<numb; j++)
|
|
printf("%s || %s = %s\n",zpbitsout(s[i]),zpbitsout(s[j]),
|
|
zpbitsout(bitcat(s[i],s[j])));
|
|
|
|
printf("\nSUBSTR:\n");
|
|
printf("%s (%d,%d) => %s\n",zpbitsout(s[3]),1,8,
|
|
zpbitsout(bitsubstr(s[3],1,8)));
|
|
printf("%s (%d,%d) => %s\n",zpbitsout(s[3]),9,8,
|
|
zpbitsout(bitsubstr(s[3],9,8)));
|
|
printf("%s (%d,%d) => %s\n",zpbitsout(s[3]),1,9,
|
|
zpbitsout(bitsubstr(s[3],1,9)));
|
|
printf("%s (%d,%d) => %s\n",zpbitsout(s[3]),3,5,
|
|
zpbitsout(bitsubstr(s[3],3,5)));
|
|
printf("%s (%d,%d) => %s\n",zpbitsout(s[3]),3,9,
|
|
zpbitsout(bitsubstr(s[3],3,9)));
|
|
printf("%s (%d,%d) => %s\n",zpbitsout(s[3]),3,17,
|
|
zpbitsout(bitsubstr(s[3],3,17)));
|
|
printf ("\nLOGICAL AND:\n");
|
|
for (i=0; i<numb; i++)
|
|
for (j=i+1; j<numb; j++)
|
|
printf("%s & %s = %s\n",zpbitsout(s[i]),zpbitsout(s[j]),
|
|
zpbitsout(bitand(s[i],s[j])));
|
|
|
|
printf ("\nLOGICAL OR:\n");
|
|
for (i=0; i<numb; i++)
|
|
for (j=i+1; j<numb; j++)
|
|
printf("%s | %s = %s\n",zpbitsout(s[i]),zpbitsout(s[j]),
|
|
zpbitsout(bitor(s[i],s[j])));
|
|
|
|
printf ("\nLOGICAL XOR:\n");
|
|
for (i=0; i<numb; i++)
|
|
for (j=i+1; j<numb; j++)
|
|
printf("%s ^ %s = %s\n",zpbitsout(s[i]),zpbitsout(s[j]),
|
|
zpbitsout(bitxor(s[i],s[j])));
|
|
|
|
printf ("\nLOGICAL NOT:\n");
|
|
for (i=0; i<numb; i++)
|
|
printf("~%s = %s\n",zpbitsout(s[i]),zpbitsout(bitnot(s[i])));
|
|
|
|
|
|
printf ("\nSHIFT LEFT:\n");
|
|
for (i=0; i<numb; i++) {
|
|
printf("%s\n",zpbitsout(s[i]));
|
|
for (j=0; j<=VARBITLEN(s[i]); j++)
|
|
printf("\t%3d\t%s\n",j,zpbitsout(bitshiftleft(s[i],j)));
|
|
}
|
|
|
|
printf ("\nSHIFT RIGHT:\n");
|
|
for (i=0; i<numb; i++) {
|
|
printf("%s\n",zpbitsout(s[i]));
|
|
for (j=0; j<=VARBITLEN(s[i]); j++)
|
|
printf("\t%3d\t%s\n",j,zpbitsout(bitshiftright(s[i],j)));
|
|
}
|
|
|
|
printf ("\n\n ********** VARYING **********\n");
|
|
for (i=0; i<numb; i++) {
|
|
printf ("Input: %s\n",b[i]);
|
|
s[i] = varbitin(b[i], 0, atttypmod[i]);
|
|
/*print_details(s);*/
|
|
printf ("%s\n",zpbitout(s[i]));
|
|
printf ("%s\n",zpbitsout(s[i]));
|
|
}
|
|
|
|
printf ("\nCOMPARISONS:\n");
|
|
for (i=0; i<numb; i++)
|
|
for (j=i+1; j<numb; j++)
|
|
printf("%s <=> %s = %d\n",zpbitsout(s[i]),zpbitsout(s[j]),
|
|
bitcmp(s[i],s[j]));
|
|
|
|
printf ("\nCONCATENATION:\n");
|
|
for (i=0; i<numb; i++)
|
|
for (j=i+1; j<numb; j++)
|
|
printf("%s || %s = %s\n",zpbitsout(s[i]),zpbitsout(s[j]),
|
|
zpbitsout(bitcat(s[i],s[j])));
|
|
|
|
printf("\nSUBSTR:\n");
|
|
printf("%s (%d,%d) => %s\n",zpbitsout(s[3]),1,8,
|
|
zpbitsout(bitsubstr(s[3],1,8)));
|
|
printf("%s (%d,%d) => %s\n",zpbitsout(s[3]),9,8,
|
|
zpbitsout(bitsubstr(s[3],9,8)));
|
|
printf("%s (%d,%d) => %s\n",zpbitsout(s[3]),1,9,
|
|
zpbitsout(bitsubstr(s[3],1,9)));
|
|
printf("%s (%d,%d) => %s\n",zpbitsout(s[3]),3,5,
|
|
zpbitsout(bitsubstr(s[3],3,5)));
|
|
printf("%s (%d,%d) => %s\n",zpbitsout(s[3]),3,9,
|
|
zpbitsout(bitsubstr(s[3],3,9)));
|
|
printf("%s (%d,%d) => %s\n",zpbitsout(s[3]),3,17,
|
|
zpbitsout(bitsubstr(s[3],3,17)));
|
|
printf ("\nLOGICAL AND:\n");
|
|
for (i=0; i<numb; i++)
|
|
for (j=i+1; j<numb; j++)
|
|
printf("%s & %s = %s\n",zpbitsout(s[i]),zpbitsout(s[j]),
|
|
zpbitsout(bitand(s[i],s[j])));
|
|
|
|
printf ("\nLOGICAL OR:\n");
|
|
for (i=0; i<numb; i++)
|
|
for (j=i+1; j<numb; j++)
|
|
printf("%s | %s = %s\n",zpbitsout(s[i]),zpbitsout(s[j]),
|
|
zpbitsout(bitor(s[i],s[j])));
|
|
|
|
printf ("\nLOGICAL XOR:\n");
|
|
for (i=0; i<numb; i++)
|
|
for (j=i+1; j<numb; j++)
|
|
printf("%s ^ %s = %s\n",zpbitsout(s[i]),zpbitsout(s[j]),
|
|
zpbitsout(bitxor(s[i],s[j])));
|
|
|
|
printf ("\nLOGICAL NOT:\n");
|
|
for (i=0; i<numb; i++)
|
|
printf("~%s = %s\n",zpbitsout(s[i]),zpbitsout(bitnot(s[i])));
|
|
|
|
|
|
printf ("\nSHIFT LEFT:\n");
|
|
for (i=0; i<numb; i++) {
|
|
printf("%s\n",zpbitsout(s[i]));
|
|
for (j=0; j<=VARBITLEN(s[i]); j++)
|
|
printf("\t%3d\t%s\n",j,zpbitsout(bitshiftleft(s[i],j)));
|
|
}
|
|
|
|
printf ("\nSHIFT RIGHT:\n");
|
|
for (i=0; i<numb; i++) {
|
|
printf("%s\n",zpbitsout(s[i]));
|
|
for (j=0; j<=VARBITLEN(s[i]); j++)
|
|
printf("\t%3d\t%s\n",j,zpbitsout(bitshiftright(s[i],j)));
|
|
}
|
|
|
|
}
|