How can I get Embedded Coder to use the Arm Cortex M CMSIS functions

Matlab 2015b with Embedded Coder and add-ons:

• Embedded Coder Support Package for ARM Cortex-M Processors
• DSP System Toolbox Support Package for ARM Cortex-M Processors
• Embedded Coder Support Package for STMicroelectronics STM32F4-Discovery Board

Coder options:

• Standard math library: C89/C90 (ANSI)
• Code replacement library: GCC Arm Cortex M-3
• Device: Arm Compatible / Arm Cortex

Whatever I try, this Matlab function:

function a = thecosinus(b)
a = cos(b)

gets converted into this C code:

#include <math.h>
double thecosinus(double b)
 22   {
 23     return cos(b);
 24   }

How can I get coder to use the CMSIS function

#include <arm_math.h>
double thecosinus(double b)
 22   {
 23     return arm_cos_f32(b);
 24   }

instead? And why does the code generation fail when I choose the C99 standard math library? Lastly, how can I let it use floats instead of doubles?