Return a modular hash value for the specified key.
Synopsis
Declared in <bdlb_hashutil.h>
static
unsigned int
hash0(
char key,
int modulus);Description
Return an unsigned integer hash value in the range from zero to one less than the specified modulus corresponding to the specified key. The behavior is undefined unless 0 < modulus < 2ˆ31. 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 value.
Return Value
modular hash value for key in [0 .. modulus)]
Parameters
Name |
Description |
key |
value to hash |
modulus |
positive upper bound (exclusive) of the hash range |
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