5.3.101 _Q31sub Function
This function finds the difference of two Q31 values. The function takes care of saturation during overflow and underflow occurrences.
Include
<libq.h>
Prototype
_Q31 _Q31sub(_Q31 x,_Q31 y);
Arguments
x |
a fixed-point number in Q31 format, which ranges from -231 to 231-1. The value of this argument ranges from -2147483648 to 2147483647. |
y |
a fixed-point number in Q31 format, which ranges from -231 to 231-1. The value of this argument ranges from -2147483648 to 2147483647. |
Return Value
This function returns x minus y in Q31 format. The
value ranges from -2147483648 to 2147483647.