The D Programming Language's Unofficial Docs
beta
The D Programming Language's Unofficial Docs
beta
a non-NULL pointer to an array of size_ts.
a bit number, starting with bit 0 of p[0], and progressing. It addresses bits like the expression:
p[index / (size_t.sizeof*8)] & (1 << (index & ((size_t.sizeof*8) - 1)))
A non-zero value if the bit was set, and a zero if it was clear.
1 size_t[2] array; 2 3 array[0] = 2; 4 array[1] = 0x100; 5 6 assert(btc(array.ptr, 35) == 0); 7 if (size_t.sizeof == 8) 8 { 9 assert(array[0] == 0x8_0000_0002); 10 assert(array[1] == 0x100); 11 } 12 else 13 { 14 assert(array[0] == 2); 15 assert(array[1] == 0x108); 16 } 17 18 assert(btc(array.ptr, 35)); 19 assert(array[0] == 2); 20 assert(array[1] == 0x100); 21 22 assert(bts(array.ptr, 35) == 0); 23 if (size_t.sizeof == 8) 24 { 25 assert(array[0] == 0x8_0000_0002); 26 assert(array[1] == 0x100); 27 } 28 else 29 { 30 assert(array[0] == 2); 31 assert(array[1] == 0x108); 32 } 33 34 assert(btr(array.ptr, 35)); 35 assert(array[0] == 2); 36 assert(array[1] == 0x100);
Tests and sets the bit.