mirror of
https://github.com/postgres/postgres.git
synced 2025-10-26 00:02:18 -04:00
185 lines
5.2 KiB
C
185 lines
5.2 KiB
C
#include "postgres.h"
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#include "varbit.h"
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#include <stdio.h>
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void print_details(unsigned char *s);
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const int numb = 8;
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/*
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const char *b[] = { "B0010", "B11011011", "B0001", "X3F12", "X27", "B",
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"X11", "B100111"};
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int atttypmod[] = {-1, -1, -1,-1,-1,-1,-1,-1 };
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*/
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const char *b[] = {"B0010", "B11011011", "B10001", "X3D12", "X27", "B",
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"X11", "B100111"};
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int atttypmod[] = {7, 9, 6, 18, 11, 6, -1, -1};
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void
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print_details(unsigned char *s)
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{
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int i;
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printf("Length in bytes : %d\n", VARSIZE(s));
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printf("Length of bitstring: %d\n", VARBITLEN(s));
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for (i = 8; i < VARSIZE(s); i++)
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printf("%X%X ", s[i] >> 4, s[i] & 0xF);
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printf("\n");
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}
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int
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main()
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{
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int i,
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j;
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char *s[numb];
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for (i = 0; i < numb; i++)
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{
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printf("Input: %s\n", b[i]);
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s[i] = zpbitin(b[i], 0, atttypmod[i]);
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//print_details(s[i]);
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printf("%s = %s\n", zpbitout(s[i]), zpbitsout(s[i]));
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}
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printf("\nCOMPARISONS:\n");
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for (i = 0; i < numb; i++)
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for (j = i + 1; j < numb; j++)
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printf("%s <=> %s = %d\n", zpbitsout(s[i]), zpbitsout(s[j]),
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bitcmp(s[i], s[j]));
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printf("\nCONCATENATION:\n");
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for (i = 0; i < numb; i++)
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for (j = i + 1; j < numb; j++)
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printf("%s || %s = %s\n", zpbitsout(s[i]), zpbitsout(s[j]),
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zpbitsout(bitcat(s[i], s[j])));
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printf("\nSUBSTR:\n");
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printf("%s (%d,%d) => %s\n", zpbitsout(s[3]), 1, 8,
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zpbitsout(bitsubstr(s[3], 1, 8)));
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printf("%s (%d,%d) => %s\n", zpbitsout(s[3]), 9, 8,
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zpbitsout(bitsubstr(s[3], 9, 8)));
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printf("%s (%d,%d) => %s\n", zpbitsout(s[3]), 1, 9,
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zpbitsout(bitsubstr(s[3], 1, 9)));
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printf("%s (%d,%d) => %s\n", zpbitsout(s[3]), 3, 5,
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zpbitsout(bitsubstr(s[3], 3, 5)));
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printf("%s (%d,%d) => %s\n", zpbitsout(s[3]), 3, 9,
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zpbitsout(bitsubstr(s[3], 3, 9)));
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printf("%s (%d,%d) => %s\n", zpbitsout(s[3]), 3, 17,
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zpbitsout(bitsubstr(s[3], 3, 17)));
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printf("\nLOGICAL AND:\n");
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for (i = 0; i < numb; i++)
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for (j = i + 1; j < numb; j++)
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printf("%s & %s = %s\n", zpbitsout(s[i]), zpbitsout(s[j]),
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zpbitsout(bitand(s[i], s[j])));
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printf("\nLOGICAL OR:\n");
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for (i = 0; i < numb; i++)
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for (j = i + 1; j < numb; j++)
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printf("%s | %s = %s\n", zpbitsout(s[i]), zpbitsout(s[j]),
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zpbitsout(bitor(s[i], s[j])));
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printf("\nLOGICAL XOR:\n");
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for (i = 0; i < numb; i++)
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for (j = i + 1; j < numb; j++)
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printf("%s ^ %s = %s\n", zpbitsout(s[i]), zpbitsout(s[j]),
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zpbitsout(bitxor(s[i], s[j])));
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printf("\nLOGICAL NOT:\n");
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for (i = 0; i < numb; i++)
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printf("~%s = %s\n", zpbitsout(s[i]), zpbitsout(bitnot(s[i])));
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printf("\nSHIFT LEFT:\n");
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for (i = 0; i < numb; i++)
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{
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printf("%s\n", zpbitsout(s[i]));
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for (j = 0; j <= VARBITLEN(s[i]); j++)
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printf("\t%3d\t%s\n", j, zpbitsout(bitshiftleft(s[i], j)));
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}
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printf("\nSHIFT RIGHT:\n");
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for (i = 0; i < numb; i++)
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{
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printf("%s\n", zpbitsout(s[i]));
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for (j = 0; j <= VARBITLEN(s[i]); j++)
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printf("\t%3d\t%s\n", j, zpbitsout(bitshiftright(s[i], j)));
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}
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printf("\n\n ********** VARYING **********\n");
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for (i = 0; i < numb; i++)
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{
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printf("Input: %s\n", b[i]);
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s[i] = varbitin(b[i], 0, atttypmod[i]);
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/* print_details(s); */
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printf("%s\n", zpbitout(s[i]));
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printf("%s\n", zpbitsout(s[i]));
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}
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printf("\nCOMPARISONS:\n");
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for (i = 0; i < numb; i++)
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for (j = i + 1; j < numb; j++)
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printf("%s <=> %s = %d\n", zpbitsout(s[i]), zpbitsout(s[j]),
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bitcmp(s[i], s[j]));
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printf("\nCONCATENATION:\n");
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for (i = 0; i < numb; i++)
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for (j = i + 1; j < numb; j++)
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printf("%s || %s = %s\n", zpbitsout(s[i]), zpbitsout(s[j]),
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zpbitsout(bitcat(s[i], s[j])));
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printf("\nSUBSTR:\n");
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printf("%s (%d,%d) => %s\n", zpbitsout(s[3]), 1, 8,
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zpbitsout(bitsubstr(s[3], 1, 8)));
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printf("%s (%d,%d) => %s\n", zpbitsout(s[3]), 9, 8,
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zpbitsout(bitsubstr(s[3], 9, 8)));
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printf("%s (%d,%d) => %s\n", zpbitsout(s[3]), 1, 9,
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zpbitsout(bitsubstr(s[3], 1, 9)));
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printf("%s (%d,%d) => %s\n", zpbitsout(s[3]), 3, 5,
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zpbitsout(bitsubstr(s[3], 3, 5)));
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printf("%s (%d,%d) => %s\n", zpbitsout(s[3]), 3, 9,
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zpbitsout(bitsubstr(s[3], 3, 9)));
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printf("%s (%d,%d) => %s (%s)\n", zpbitsout(s[3]), 3, 17,
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zpbitsout(bitsubstr(s[3], 3, 17)), zpbitsout(bitsubstr(s[3], 3, 17)));
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printf("\nLOGICAL AND:\n");
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for (i = 0; i < numb; i++)
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for (j = i + 1; j < numb; j++)
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printf("%s & %s = %s\n", zpbitsout(s[i]), zpbitsout(s[j]),
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zpbitsout(bitand(s[i], s[j])));
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printf("\nLOGICAL OR:\n");
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for (i = 0; i < numb; i++)
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for (j = i + 1; j < numb; j++)
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printf("%s | %s = %s\n", zpbitsout(s[i]), zpbitsout(s[j]),
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zpbitsout(bitor(s[i], s[j])));
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printf("\nLOGICAL XOR:\n");
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for (i = 0; i < numb; i++)
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for (j = i + 1; j < numb; j++)
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printf("%s ^ %s = %s\n", zpbitsout(s[i]), zpbitsout(s[j]),
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zpbitsout(bitxor(s[i], s[j])));
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printf("\nLOGICAL NOT:\n");
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for (i = 0; i < numb; i++)
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printf("~%s = %s\n", zpbitsout(s[i]), zpbitsout(bitnot(s[i])));
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printf("\nSHIFT LEFT:\n");
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for (i = 0; i < numb; i++)
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{
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printf("%s\n", zpbitsout(s[i]));
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for (j = 0; j <= VARBITLEN(s[i]); j++)
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printf("\t%3d\t%s\n", j, zpbitsout(bitshiftleft(s[i], j)));
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}
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printf("\nSHIFT RIGHT:\n");
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for (i = 0; i < numb; i++)
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{
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printf("%s\n", zpbitsout(s[i]));
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for (j = 0; j <= VARBITLEN(s[i]); j++)
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printf("\t%3d\t%s\n", j, zpbitsout(bitshiftright(s[i], j)));
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}
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}
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