##### Synopsis

    #include <in430.h>
    unsigned long long _DSUB64(unsigned long long x, unsigned long long y);

##### Description

_DSUB64 subtracts y from x using decimal arithmetic. Both x and y must be binary coded decimal numbers and the result is a binary coded decimal number.

_DSUB64 is an intrinsic function and produces inline code.

##### Portability

_DSUB64 can be used on any MSP430 device.