Sha256: 39a3c09d4ae0f91dec7a6bbcdbdadcbdf418ee888eb174042cad50bea0fb14ff
Contents?: true
Size: 1.04 KB
Versions: 9
Compression:
Stored size: 1.04 KB
Contents
var BI_RM = "0123456789abcdefghijklmnopqrstuvwxyz";
export function int2char(n) {
return BI_RM.charAt(n);
}
//#region BIT_OPERATIONS
// (public) this & a
export function op_and(x, y) {
return x & y;
}
// (public) this | a
export function op_or(x, y) {
return x | y;
}
// (public) this ^ a
export function op_xor(x, y) {
return x ^ y;
}
// (public) this & ~a
export function op_andnot(x, y) {
return x & ~y;
}
// return index of lowest 1-bit in x, x < 2^31
export function lbit(x) {
if (x == 0) {
return -1;
}
var r = 0;
if ((x & 0xffff) == 0) {
x >>= 16;
r += 16;
}
if ((x & 0xff) == 0) {
x >>= 8;
r += 8;
}
if ((x & 0xf) == 0) {
x >>= 4;
r += 4;
}
if ((x & 3) == 0) {
x >>= 2;
r += 2;
}
if ((x & 1) == 0) {
++r;
}
return r;
}
// return number of 1 bits in x
export function cbit(x) {
var r = 0;
while (x != 0) {
x &= x - 1;
++r;
}
return r;
}
//#endregion BIT_OPERATIONS
Version data entries
9 entries across 9 versions & 1 rubygems