Return a modular hash value for the specified string of the specified stringLength.
Declared in <bdlb_hashutil.h>
static
unsigned int
hash0(
char const* string,
int stringLength,
int modulus);Return a pseudo-random unsigned integer in the range from zero to one less than the specified modulus corresponding to the specified string having the specified stringLength. string need not be null-terminated and may contain embedded null characters. The behavior is undefined unless 0 <= stringLength and 0 < modulus < 2^31. Note that modulus is expected to be a prime not close to an integral power of 2. Also note that specifying a modulus of 1 will cause 0 to be returned for every string.
modular hash value for string in [0 .. modulus)]
| Name | Description |
|---|---|
| string | character sequence to hash (need not be null-terminated) |
| stringLength | length of string in bytes |
| modulus | positive upper bound (exclusive) of the hash range |