Module: MurmurRedux::Native32

Defined in:
ext/murmur_native/murmur_native.c

Instance Method Summary collapse

Instance Method Details

#murmur3_32_fmix(integer) ⇒ Object

end of MurmurHash3 algorithm



281
282
283
284
285
286
 
# File 'ext/murmur_native/murmur_native.c', line 281

static VALUE
rb_fmix32(VALUE self, VALUE integer)
{
    uint32_t _int = NUM2UINT(integer);
    return UINT2NUM(fmix32(_int));
}

#murmur3_32_int32_hash(*args) ⇒ Object 



317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
 
# File 'ext/murmur_native/murmur_native.c', line 317

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) ⇒ Object 



334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
 
# File 'ext/murmur_native/murmur_native.c', line 334

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) ⇒ Object 



300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
 
# File 'ext/murmur_native/murmur_native.c', line 300

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);
}