How can I use math.h in Segger Embedded Studio?

[Bergmann]

Hi, 

I want to use the math.h for my nRF9160 project, but when I include it, it doesn't find it.
I am a beginner and I wanted to ask how do I include libarys proparly in Segger Embedded Studio?

I already tried to copy a math.h file from a other project to the \ncs\zephyr\lib\libc\minimal\include directory, but then it didn't found the sqrt function I need!

Thanks for your answers and your help!

[Turbo J]

Zephyr config has an option to enable "newlib" libc in the menuconfig. This should also enable math.h libs IIRC.

[Bergmann]

Where do I find the menuconfig? Is it my prj.conf file?

I added 

CONFIG_NEWLIB_LIBC=y

to my prj.conf, but it didn't make a difference.

Thanks for your help!

[Didrik Rokhaug]

Hi.

Bergmann said:

it didn't make a difference

 If you are using Segger Embedded Studio, you must re-load the project for changes in prj.conf to take effect.

If you only want to change the current build, you can select Project -> Configure nRF Connect SDK Project to open a configuration tool.

If you build from the command line, you can use ninja menuconfig (inside the build folder) to achieve the same.

Best regards,

Didrik