Sometimes it’s useful to save a little memory by storing data as bits rather than bytes. \u00a0After all, if you’re storing a boolean then using a whole byte is rather wasteful. \u00a0In any event, sometime you might want to inspect individual bits when working on your program. \u00a0If you’ve ever needed to do this then this code will help.<\/p>\n
void dumpbits(char byte)\r\n{\r\n\tchar finalhash[13]={'\\0'};\r\n\tchar hexval[16] = {'0', '1', '2', '3', '4', '5', '6',\r\n '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};\r\n\tunsigned char mask_table[] = { 0x01, 0x02, 0x04,\r\n 0x08, 0x10, 0x20, 0x40, 0x80 };\r\n\r\n\tfinalhash[0] = hexval[((byte >> 4) & 0xF)];\r\n\tfinalhash[1] = hexval[byte & 0x0F];\r\n\tfinalhash[2] = ' ';\r\n\tfor (int iterator=0;iterator<8;iterator++)\r\n\t{\r\n\t\tif (( byte & mask_table[iterator] ) != 0x00)\r\n\t\t\tfinalhash[3+iterator]='1';\r\n\t\telse\r\n\t\t\tfinalhash[3+iterator]='0';\r\n\t}\r\n\tprintf(\"%s \",finalhash);\r\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"Sometimes it’s useful to save a little memory by storing data as bits rather than bytes. \u00a0After all, if you’re storing a boolean then using a whole byte is rather wasteful. \u00a0In any event, sometime you might want to inspect individual bits when working on your program. \u00a0If you’ve ever needed to do this then … <\/p>\n