How can I do this in PB? There is no function Pow()

[Stephane Fonteyne]

Dear all,

How can I this rewritten in PB statements/ functions this expression:

g_Frequency = pow_(CDBL(2 * g_PulseLength),CDBL(-1)) * 1000000

Kind regards
Stephane

[Mark Hunter]

pow_(CDBL(2 * g_PulseLength),CDBL(-1)) * 1000000

Assume pow_(x,y) means x to the y power. If y = -1 that equals 1/x, so your expression amounts to

1000000 / (2 * g_PulseLength)
or
500000 / g_PulseLength

Assume CDBL means convert to double precision. For a double precision result use:

500000# / CDbl(g_PulseLength)

[Stephane Fonteyne]

Assume pow_(x,y) means x to the y power. If y = -1 that equals 1/x, so your expression amounts to

1000000 / (2 * g_PulseLength)
or
500000 / g_PulseLength

Assume CDBL means convert to double precision. For a double precision result use:

500000# / CDbl(g_PulseLength)

Thanks, for your very quick response :=)

[Michael Mattias]

Well, if there is no Pow(), I suppose you could try Bang() or Smack().

For all I know Snap(), Crackle() and Pop() may also be worth an effort.

[Stephane Fonteyne]

Well, if there is no Pow(), I suppose you could try Bang() or Smack().

For all I know Snap(), Crackle() and Pop() may also be worth an effort.

Funny :=)

[Neil Prichard]

Whilst there is not a POW function there is an equivalent operator which is "^".

so your code would be :

g_Frequency = CDBL(2 * g_PulseLength) ^ CDBL(-1) * 1000000

or if you really need a POW function you could try:

FUNCTION POW (x AS DOUBLE, y AS DOUBLE) AS DOUBLE

    FUNCTION = x ^ Y

END FUNCTION