Where is MLIB_Conv_F32f

[aberger]

I am trying to use the Math Library (MLIB) for Cortex M4F, specifically the MLIB_Conv_F32f function, which accepts a float_t and returns a frac32_t in the range <-1; 1). This functionality is described in the MLIB User Guide. However, the function seems to be missing from the actual library, as when I #include "mlib.h", I end up with the compilation error "undefined reference to 'MLIB_Conv_F32f'. Furthermore, digging around in "mlib.h" and "MLIB_Conv_F32.h" reveals no references or definitions for this function. What am I missing?

[Alice_Yang]

Hello Andy,

I haven't find the function "MLIB_Conv_F32f "of in " MLIB User Guide for ARM Cortex M4",

only two convert functions:

you can find the guide :

 https://www.nxp.com/docs/en/user-guide/CM4MLIBUG.pdf?fsrch=1&sr=3&pageNum=1  

It also describe how to use it on MCUXpresso IDE, KDS, IAR or KEIL.

Hope it helps,

Have a great day,
TIC

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[aberger]

I am speaking in reference to the CM4F library (for processors with an FPU) from "MLIB User's Guide: ARM® Cortex® M4F".

https://www.nxp.com/docs/en/user-guide/CM4FMLIBUG.pdf?fsrch=1&sr=3&pageNum=1 

Even though these function versions are listed in the table, they do not seem available when I include the MLIB library. 

[Alice_Yang · Accepted solution]

Hello Andy,

Sorry to reply you late.

The float conv function is in the MLIB_Conv_FLT_Asmi.h file. So, if you want to use the functions with floating-point types you must include the mlib_FP.h file. The mlib.h only includes the frac/integer functions.

Hope it helps.

Have a great day,
TIC

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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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[Alice_Yang]

Hello Andy,

I have checked  the RTCESL lib for CM4F, there only are two functions in the file  "MLIB_Conv_F32.h":

I will tell you after confirm whether it lost other functions .

Sorry for the inconvenient to you .

BR

Alice