How is binary data related to double precision data?

1. How is double represented in binary?
2. What is double precision data?
3. What is used to represent a double precision variable?
4. How many bytes can be stored by double precision number?

How is double represented in binary?

There are 64 bits to represent a double (compared to 32 for int). The sign is represented by a bit this time (1 for "-" and 0 for "+"). The exponent is an 11-bit binary number, but is stored as a "positive" number in the range 0..

What is double precision data?

Double precision means the numbers takes twice the word-length to store. On a 32-bit processor, the words are all 32 bits, so doubles are 64 bits.

What is used to represent a double precision variable?

For single precision, 32 bits are used to represent the floating-point number. For double precision, 64 bits are used to represent the floating-point number.

How many bytes can be stored by double precision number?

The length of a double is 64 bits or 8 bytes. Doubles are encoded using the IEEE standard for normalized double-precision floating-point numbers.