In this example the Vitis HLS ap_fixed type is used to
define an 18-bit variable with 6 bits representing
the numbers above the decimal point (including the
sign bit) and 12-bits representing the value below
the decimal point. The variable is specified as
signed, the quantization mode is set to round to
plus infinity and the default wrap-around mode is
used for overflow.
#include <ap_fixed.h>
...
ap_fixed<18,6,AP_RND > my_type;
...