Photon Calculator Problems

QNX Newsgroups (Archives) qdn.public.qnxrtp.photon
1

Hello,


The Photon Calculator’s trig functions are strange. Where is inverse
Tan? Who needs 1/COS, 1/SIN or 1/TAN buttons (may be calculated using
the 1/x key)?

-1
It seems someone mistook sin (x) to mean 1/sin(x). It should be

-1
noted that sin (x) is an other way to write arcsin(x).



Note:

-1
sin (x) = arcsin(x)

-1
sin(x) = 1/sin(x)

-1
sin(x ) = sin(1/x)



Suggestions:

  1. rename 1/COS, 1/SIN, 1/TAN to ACOS, ASIN, and ATAN, respectively.
  2. remove the ASIN-ACOS key and replace it with EXP
  3. Let the Pi-EXP key be just Pi – having the EXP key on a 2nd function
    is annoying.


    Cheers,
    -david
2

…and so it shall be done…put I can’t promise which release the change
will appear in. :slight_smile:

William Bull
bbull@qnx.com

“David Alessio” <david.alessio@hsa.hitachi.com> wrote in message
news:3C51E2E5.B797E59E@hsa.hitachi.com…

Hello,


The Photon Calculator’s trig functions are strange. Where is inverse
Tan? Who needs 1/COS, 1/SIN or 1/TAN buttons (may be calculated using
the 1/x key)?

-1
It seems someone mistook sin (x) to mean 1/sin(x). It should be

-1
noted that sin (x) is an other way to write arcsin(x).



Note:

-1
sin (x) = arcsin(x)

-1
sin(x) = 1/sin(x)

-1
sin(x ) = sin(1/x)



Suggestions:

  1. rename 1/COS, 1/SIN, 1/TAN to ACOS, ASIN, and ATAN, respectively.
  2. remove the ASIN-ACOS key and replace it with EXP
  3. Let the Pi-EXP key be just Pi – having the EXP key on a 2nd function
    is annoying.


    Cheers,
    -david
3

William Bull wrote:

…and so it shall be done…put I can’t promise which release the change
will appear in. > :slight_smile:

Until then there is always bc (for those whom might be coming from a
Windoze background, and might believe that there is no such thing as a
cli calculator :slight_smile:

4

Hello William,

I didn’t make it into 6.2 :wink:
Will this be fixed in an upcoming patch?

Cheers,
-david



William Bull wrote:

…and so it shall be done…put I can’t promise which release the change
will appear in. > :slight_smile:

William Bull
bbull@qnx.com

“David Alessio” <> david.alessio@hsa.hitachi.com> > wrote in message
news:> 3C51E2E5.B797E59E@hsa.hitachi.com> …

Hello,


The Photon Calculator’s trig functions are strange. Where is inverse
Tan? Who needs 1/COS, 1/SIN or 1/TAN buttons (may be calculated using
the 1/x key)?

-1
It seems someone mistook sin (x) to mean 1/sin(x). It should be

-1
noted that sin (x) is an other way to write arcsin(x).



Note:

-1
sin (x) = arcsin(x)

-1
sin(x) = 1/sin(x)

-1
sin(x ) = sin(1/x)



Suggestions:

  1. rename 1/COS, 1/SIN, 1/TAN to ACOS, ASIN, and ATAN, respectively.
  2. remove the ASIN-ACOS key and replace it with EXP
  3. Let the Pi-EXP key be just Pi – having the EXP key on a 2nd function
    is annoying.


    Cheers,
    -david