|Input||- none -.|
|Output||Floating-point result on the stack.|
Pushes a random floating-point number onto the run-time stack. The number will always lie between 0 and 0.999999999999 inclusive. The stack pointer (RTA_SP) is decremented by 8.
The seed for the random number generator is held in the 7 bytes at FNT_SEED. If these bytes are set to a particular value then the sequence of random numbers following this will always be the same.
The following subroutine will place a random floating-point number in
OS FN$RND ;call random number generator LDX RTA_SP: ;source address for copying result LDD #8 STD UTW_S0: ;length for copying result ADDD RTA_SP: ;add 8 to stack pointer STD RTA_SP: ;restore stack pointer LDD #FN_RESULT ;destination for copy OS UT$CPYB RTS FN_RESULT: DS 8
|Errors||247 - bad argument in function call|