Noun
double precision (uncountable)
(computing) A number storage format that uses two adjacent locations in memory, allowing for greater precision in the values stored.
Any integer with absolute value less than 2 24 can be exactly represented in the single precision format, and any integer with absolute value less than 2 53 can be exactly represented in the double precision format. Source: Internet
An odd-even number pair of double precision registers can be used as a quad precision register, thus allowing 8 quad precision registers. Source: Internet
At 128 bits, the SSE XMMn registers could pack two double precision floats into one register. Source: Internet
It supported floating point in both 36-bit single-precision and 2 x 36-bit double precision, the exponent being stored separately, allowing up to 71 bits of precision (one bit being used for the sign). Source: Internet
Another example is double precision division and multiplication that works specifically with the AX and DX registers. Source: Internet
For example, the name of the BLAS function DGEMM function indicates that it operates on double precision numbers ('D') and general matrices ('GE'), and only the last two characters show what it actually does: matrix-matrix multiplication (the 'MM'). Source: Internet