I
I
Defined in header <complex.h> | ||
---|---|---|
#define I /* unspecified */ | (since C99) |
The I
macro expands to either _Complex_I
or _Imaginary_I
. If the implementation does not support imaginary types, then the macro always expands to _Complex_I
.
A program may undefine and perhaps then redefine the macro I
.