The difference between 1.0 and the next larger representable double precision floating-point value.
Include
<float.h>
Value
The value 1.192093e-07
by default, 2.220446e-16 if the switch -fno-short-double is used.
Remarks
By default, a
double type is the same size as a float type
(32-bit representation). The -fno-short-double switch allows the IEEE
64-bit representation to be used for a double precision floating-point value.