module MurmurRedux::V32

Public Instance Methods

murmur3_32_fmix(p1) click to toggle source

end of MurmurHash3 algorithm

static VALUE
rb_fmix32(VALUE self, VALUE integer)
{
    uint32_t _int = NUM2UINT(integer);
    return UINT2NUM(fmix32(_int));
}
murmur3_32_int32_hash(*args) click to toggle source
static VALUE
rb_murmur3_32_int32_hash(int argc, VALUE* argv, VALUE self)
{
    /* VALUE rint; */
    uint32_t _int;
    uint32_t result;

    if (argc == 0 || argc > 2) {
        rb_raise(rb_eArgError, "accept 1 or 2 arguments: (int32[, seed])");
    }
    _int = NUM2UINT(argv[0]);

    result = MurmurHash3_x86_32(&_int, 4, argc == 1 ? 0 : NUM2UINT(argv[1]));

    return UINT2NUM(result);
}
murmur3_32_int64_hash(*args) click to toggle source
static VALUE
rb_murmur3_32_int64_hash(int argc, VALUE* argv, VALUE self)
{
    /* VALUE rint; */
    uint64_t _int;
    uint32_t result;

    if (argc == 0 || argc > 2) {
        rb_raise(rb_eArgError, "accept 1 or 2 arguments: (int64[, seed])");
    }
#if SIZEOF_LONG == 8
    _int = NUM2ULONG(argv[0]);
#else
    _int = NUM2ULL(argv[0]);
#endif

    result = MurmurHash3_x86_32(&_int, 8, argc == 1 ? 0 : NUM2UINT(argv[1]));

    return UINT2NUM(result);
}
murmur3_32_str_hash(*args) click to toggle source
static VALUE
rb_murmur3_32_str_hash(int argc, VALUE* argv, VALUE self)
{
    VALUE rstr;
    uint32_t result;

    if (argc == 0 || argc > 2) {
        rb_raise(rb_eArgError, "accept 1 or 2 arguments: (string[, seed])");
    }
    rstr = argv[0];
    StringValue(rstr);

    result = MurmurHash3_x86_32(RSTRING_PTR(rstr), RSTRING_LEN(rstr), argc == 1 ? 0 : NUM2UINT(argv[1]));

    return UINT2NUM(result);
}