Return a modular hash value for the specified string of the specified stringLength.
Synopsis
Declared in <bdlb_hashutil.h>
static
unsigned int
hash0(
char const* string,
int stringLength,
int modulus);Description
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 < 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 string.
Return Value
modular hash value for string in [0 .. modulus)]
Parameters
Name |
Description |
string |
character sequence to hash (need not be null‐terminated) |
stringLength |
length of |
modulus |
positive upper bound (exclusive) of the hash range |
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