libc\math.h problem

[speed7156]

hey all
i got a problem
am writing a series60 3rd edition application and am using the functions cos(), sin () , atan2() ....etc.
when i first compiled the application there was a refrence error , the compiler coundn't c the math.h file
i came in the linker part i added the \Symbian\9.1\S60_3rd\Epoc32\include\libc
since i read in the sdk that the location is libc\math.h
it's working fine on the emulator
but when trying to build a release , here comes the porblem
undefined reference to 'cos'
undefined reference to 'sin'
undefined reference to 'atan2'
etcccc
note : i need to use the atan2 fucntion in the math.h which i didnt find in the e32math
thanx 4 ur help

[mateen_maldar]

hi,

include this line in ur mmp

SYSTEMINCLUDE \epoc32\include \epoc32\include\libc

will work fine...

Regards,
Mateen Maldar

[speed7156]

i've done so
and nothing new happenned

[mateen_maldar]

hi,

when u make changes to mmp file it needs a rebulit ..

clean the epoc32 directory and remove ur application from the epoc32
and then make a new build.....

Regards,
Mateen Maldar

[speed7156]

i've done so
n nuthing new as i told ya

[speed7156]

do u know the lib of this math.h ?!!

[mateen_maldar]

hi,

in Symbian C++ programming u have math.h in the include directory of epoc32 lib folder and s e32math.h in the include folder used in symbian for mathematical operations ....

Location: e32math.h
Link against: euser.lib

Class Math

Regards,
Mateen Maldar

[speed7156]

am sorry 4 disturbing u
but the atan2 () function
not found in the e32math.h
thanx 4 ur helpp
byeee

[ivey]

Math::ATan() has 2 overloads. The second one does the same as atan2() as I understand:

ATan()
static IMPORT_C TInt ATan(TReal &aTrg, const TReal &aSrcY, const TReal &aSrcX);
Description
Calculates the angle between the x-axis and a line drawn from the origin to a point represented by its (x,y) co-ordinates.
The co-ordinates are passed as arguments to the function. This function returns the same result as arctan(y/x), but:

1. it adds +/-pi to the result, if x is negative

2. it sets the result to +/-pi/2, if x is zero but y is non-zero.

Parameters
TReal &aTrg A reference containing the result in radians, a value between -pi exclusive and +pi inclusive.

const TReal &aSrcY The y argument of the arctan(y/x) function.

const TReal &aSrcX The x argument of the arctan(y/x) function.

Return value
TInt KErrNone if successful, otherwise another of the system-wide error codes.

[mateen_maldar]

hi,

the func atan2 is not there in e32math.h but in

Location: libc\math.h

atan2()
IMPORT_C double atan2(double, double);

Check the documentation for the function that u need and then use the appropritate headers ....

Regards,
Mateen Maldar

[muhammad_hakim]

Dear speed7156,
Please, Tell me what is the IDE used to build your project? ... I think this will help me to solve your problem.

[speed7156]

heyy
am using codewarrior

[speed7156]

does it help!?

[muhammad_hakim]

Another question :
Did you Link against: estlib.lib

[speed7156]

yess
i've done so
and nuthing new