6 ms·
Well.. C and C++ offer a wide variety of arithmetic types. Double precision is not required by the standards (except by the optional annex F of C99, cove
by kirab 10y ago
Well..
C and C++ offer a wide variety of arithmetic types.
Double precision is not required by the standards
(except by the optional annex F of C99, covering
IEEE 754 arithmetic), but on most systems, the
double type corresponds to double precision.
However, on 32-bit x86 with extended precision
by default, some compilers may not conform to
the C standard and/or the arithmetic may suffer
from double-rounding issues.
- scatters 10y agoap22213 (OP for this thread) was more precise than I was; they actually wrote "a double precision floating point variable" rather than writing "double", which could either be a shorthand for "double precision floating point" or be referring to a platform/language type (where that exists by that name).
- daemin 10y agoSo a reasonable answer could say - usually 8 bytes - but sometimes with extended precision it could be 10 bytes, etc... I am actually kind of sick of the people that say these details are not important to being a good programmer. They absolutely are, knowing fundamentals of the machine, language, and environment that you are developing in is essential.