
1.Precision:
Float:
Single precision (1 bit for sign, 8 bits for exponent, 23 bits for fraction)
Double:
Double precision (1 bit for sign, 11 bits for exponent, 52 bits for fraction)
2.Size:
Float:
4 Bytes (32 Bits)
Double:
8 Bytes (64 Bits)
3.Range:
Float:
-3.4E+38 to +3.4E+38
Double:
-1.7E+308...