UDivMod64

unsigned 64 by 32 division with 32 bit result (V47)

Returns the quotient of the unsigned 64 bit division of the divisor in registers D1 and D0, with the upper 32 bits in D1, by the divisor in D2 in D0. The remainder is returned in D1.

dividendhi, dividendlo: upper and lower 32 bits of the dividend divisor: 32 bit divisor

result

the 32 bit quotient in D0 and the remainder in D1

on overflow, registers are unchanged and the V processor bit is set

Unlike other Amiga library function calls, the utility.library 32 bit math routines do NOT require A6 to be loaded with a pointer to the library base. A6 can contain anything the application wishes. This is in order to avoid overhead in calling them.

In addition, the utility.library math routines preserve all address registers including A0 and A1

SDivMod32(), SMult32(), UDivMod32(), SMult64() UMult64(), SDivMod64()