Rotates an unsigned 64-bit value to the left by the specified number of bits.
#include <stdlib.h> uint64_t rotl64 ( uint64_t value, int shift);
(IN) Specifies the value to rotate.
(IN) Specifies the number of bits to rotate.
Returns the rotated value.
The rotl64 function rotates the 64-bit value to the left by the number of bits specified in the shift parameter.