Double Data Type

See Also45I6Y8

Double (double-precision floating-point) variables are stored as 64-bit numbers (8 bytes) ranging in value from -1.79769313486232E308 to -4.94065645841247E-324 for negative values and from 4.94065645841247E-324 to 1.79769313486232E308 for positive values.  The type-declaration character4TVC9NP for a Double is # (ANSI5221FB character 35).


Note   Double-precision floating-point numbers are stored in memory using IEEE 64-bit floating-point format. Each floating-point value consists of three parts: the sign, the exponent, and the mantissa.  In a double-precision number, the sign takes 1 bit, the exponent takes 11 bits, and the mantissa uses the remaining 52 bits plus an additional implied bit.


See Also

Single Data Type6H5W9RZ

Visual Basic Data Types2M0APUD