factorial program in vbscript using for loop

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Int var z big. Int return z. MulRange ( 1, n ) func main () fmt.

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Michael Mol ( talk ) 20:59, 30 May 2020 (UTC).

Read n,:end: if n is 0 terminates enqueue it as the initial product, reposition.:f: Start factorial loop.

Counter loop Result: Result I; end loop; return Result; end Factorial.

Numerics; -- Coefficients used by the GNU Scientific Library G: Natural: 7; P: constant array ( Natural range 0.

Lsmagicnumber10 r1 - magicnumber smull r1, r2, r3, r0 r1 - Lower32Bits ( r1 r0 ).

The maximum representable value is 1.70141183 10 38, so it can handle factorials up to 33 8.68331762 10 36, but only keeps 32 bits of precision.

That means that what you see is what you get; the mantissa for 33 is 8.68331762 exactly instead of 8.68331761881188649551819440128.

Aggregate ( ( accumulator, factor ) accumulator factor ); static void Main ( ) Console.

Aggregate ( new BigInteger ( 1 ), ( acc, num ) acc num ); static void Main ( string args ) Console.

Pour contents of the 1st mixing bowl into the 1st baking dish.

Serves 1.

Heres a selection recursive, iterative, and functional solutions.

We must be a bit more careful if we wish to permit other numeric types (e.g.

FUNCTION-ID. factorial.

DATA DIVISION. LOCAL-STORAGE SECTION.

PIC 9 ( 10 ). 01 ret PIC 9 ( 10 ).

MOVE 1 TO ret PERFORM VARYING i FROM 2 BY 1 UNTIL n MULTIPLY i BY ret END- PERFORM GOBACK.

PIC 9 ( 10 ).

IF n 0 MOVE 1 TO ret ELSE SUBTRACT 1 FROM n GIVING prev-n MULTIPLY n BY fac ( prev-n ) GIVING ret END- IF GOBACK.

This lookup version uses 5 bytes of code and 7 bytes of data and finds 5 in 5 instructions, whereas the iterative solution uses 23 bytes of code and 6 bytes of data and takes 122 instructions to find 5.

Some implementations, like OpenBSD dc, optimize the tail recursion so the call stack never overflows, though n might be large.

The calc package (which comes with Emacs) has a builtin fact().

Numbers larger than this will not be cached, but re-calculated on demand.

Details: Futharks syntax has changed, so this example will not compile.

Arranging the condition as n2 avoids infinite recursion if nNaN, since any comparison involving NaN is false.

Could change 1 to an expression like n01 to propagate a NaN input to the output too, if desired.

Int var z big. Int return z.

MulRange ( 1, n ) func main () fmt.

Factorial Program In Vbscript Using For Loop