Going by the standard, all that’s guaranteed is: int must be at least 16 bits long must be at least 32 bits long long must be at least 64 bits On major 32-bit platforms: int is 32 bits long is 32 bits as well long long is 64 bits On major 64-bit platforms: int is … Read more
Primitive data types cannot be null. Only Object data types can be null. There are 8 primitive types in Java: Data Type Size Description byte 1 byte Int8 short 2 bytes Int16 int 4 bytes Int32 long 8 bytes Int64 float 4 bytes Single double 8 bytes Double boolean 1 bit Boolean If you use … Read more
Long.decode(str) accepts a variety of formats: Accepts decimal, hexadecimal, and octal numbers given by the following grammar: DecodableString: Signopt DecimalNumeral Signopt 0x HexDigits Signopt 0X HexDigits Signopt # HexDigits Signopt 0 OctalDigits Sign: – But in your case that won’t help, your String is beyond the scope of what long can hold. You need a … Read more
You’ll get that error once your numbers are greater than sys.maxsize: >>> p = [sys.maxsize] >>> preds[0] = p >>> p = [sys.maxsize+1] >>> preds[0] = p Traceback (most recent call last): File “<stdin>”, line 1, in <module> OverflowError: Python int too large to convert to C long You can confirm this by checking: >>> … Read more
The language guarantees that int is at least 16 bits, long is at least 32 bits, and long can represent at least all the values that int can represent. If you assign a long value to an int object, it will be implicitly converted. There’s no need for an explicit cast; it would merely specify … Read more
%lld is the standard C99 way, but that doesn’t work on the compiler that I’m using (mingw32-gcc v4.6.0). The way to do it on this compiler is: %I64d So try this: if(e%n==0)printf(“%15I64d -> %1.16I64d\n”,e, 4*pi); and scanf(“%I64d”, &n); The only way I know of for doing this in a completely portable way is to use … Read more
That method can’t return true. That’s the point of Long.MAX_VALUE. It would be really confusing if its name were… false. Then it should be just called Long.SOME_FAIRLY_LARGE_VALUE and have literally zero reasonable uses. Just use Android’s isUserAGoat, or you may roll your own function that always returns false. Note that a long in memory takes … Read more
With Python 3.2 and later, you can use int.to_bytes and int.from_bytes: https://docs.python.org/3/library/stdtypes.html#int.to_bytes
BigInteger is capable of holding far bigger numbers than Long. BigInteger seems capable of holding (2 ^ 32) ^ Integer.MAX_VALUE, though that depends on the implementation (and, even if truly unbounded in the implementation, there will eventually be a physical resource limit) See explanation here. The range of Long is [-9,223,372,036,854,775,808, +9,223,372,036,854,775,807]. Long will perform … Read more
This is a common way to do it: long l = Long.parseLong(str); There is also this method: Long.valueOf(str); Difference is that parseLong returns a primitive long while valueOf returns a new Long() object.