islessequal
#define islessequal(x, y) __builtin_islessequal((x), (y))
#define islessequal(x, y) (!isunordered((x), (y)) && (x) <= (y))
#undef islessequal
#define islessequal(x, y) __builtin_islessequal(x, y)
#undef islessequal
#define islessequal(x, y) ((x) __builtin_islessequal(y))