Double type data storage

Double Type 64 bits (0~63)

Where the highest bit 63bit represents the symbol: 0 positive 1 negative

Exponent bit of 62~52bit:11 bit

52~0bit:52 bits of data bits

Example Description:-64.446263

1. Total 8 bytes, 63bit:1;
2. 62~52bit:64=100 000; So the exponent should be 7, where the hidden bit technique is used, the first bit 1 is hidden, so the digit = 6, and the digit base is 1023 so the end is 1029=100 0000 0101;
3. 52~0: The first 6 bits should be 00 0000 (64=100 0000 hidden highest bit 1); the remaining 46 bits represent 0.446263

Use hexadecimal notation: 0x c0 00 50 ...

The actual store is a high-order byte on the far right.

Char type to double type you can use the memcpy function in C + +:

    Char temp[8,-3,-------------113,--  (--  );     Double d=0;    memcpy (8);

Double type data storage