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October 19, 2022 04:09
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#include <stdio.h> | |
#define IS_DIG(x) (((x)|1)=='1') | |
#define SLEN(s) ((sizeof s)-1) | |
#define RIDX(s,x) ((x)<SLEN(s)?s[SLEN(s)-1-(x)]:0) | |
#define CNT(s,x,n) ((x)<n?IS_DIG(RIDX(s,(x))):0) | |
#define CNT4(s,x,n) (CNT(s,x+0,n)+CNT(s,x+1,n)+CNT(s,x+2,n)+CNT(s,x+3,n)) | |
#define CNT16(s,x,n) (CNT4(s,x+0,n)+CNT4(s,x+4,n)+CNT4(s,x+8,n)+CNT4(s,x+12,n)) | |
#define CNT64(s,x,n) (CNT16(s,x+0,n)+CNT16(s,x+16,n)+CNT16(s,x+32,n)+CNT16(s,x+48,n)) | |
#define VAL(s,x) ((RIDX(s,x)=='1')<<(CNT64(s,0,x))) | |
#define VAL4(s,x) (VAL(s,x+0)+VAL(s,x+1)+VAL(s,x+2)+VAL(s,x+3)) | |
#define VAL16(s,x) (VAL4(s,x+0)+VAL4(s,x+4)+VAL4(s,x+8)+VAL4(s,x+12)) | |
#define VAL64(s,x) (VAL16(s,x+0)+VAL16(s,x+16)+VAL16(s,x+32)+VAL16(s,x+48)) | |
#define PARSE_BIN_STRING(s) VAL64(#s,0) | |
int main() | |
{ | |
printf("%u\n", PARSE_BIN_STRING(0b1_1011)); // 27 | |
printf("%u\n", PARSE_BIN_STRING(0100_0001)); // 65 | |
printf("%u\n", PARSE_BIN_STRING(1 0 0 1)); // 9 | |
printf("%u\n", PARSE_BIN_STRING(this 1s s0 c001 )); // 17 | |
printf("%u\n", PARSE_BIN_STRING(10101010101010101010101010101010)); // 2863311530 | |
} |
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