diff options
Diffstat (limited to 'fw/midi-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/SupportFunctions/float_to_fixed.c')
| -rw-r--r-- | fw/midi-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/SupportFunctions/float_to_fixed.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/fw/midi-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/SupportFunctions/float_to_fixed.c b/fw/midi-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/SupportFunctions/float_to_fixed.c new file mode 100644 index 0000000..107556b --- /dev/null +++ b/fw/midi-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/SupportFunctions/float_to_fixed.c @@ -0,0 +1,52 @@ +#include "ref.h"
+
+void ref_float_to_q31(
+ float32_t * pSrc,
+ q31_t * pDst,
+ uint32_t blockSize)
+{
+ uint32_t i;
+ float32_t in;
+
+ for(i=0;i<blockSize;i++)
+ {
+ in = pSrc[i];
+ in *= 2147483648.0f; //scale up
+ in += in > 0.0f ? 0.5f : -0.5f; //round
+ pDst[i] = ref_sat_q31((q63_t)in); //cast and saturate
+ }
+}
+
+void ref_float_to_q15(
+ float32_t * pSrc,
+ q15_t * pDst,
+ uint32_t blockSize)
+{
+ uint32_t i;
+ float32_t in;
+
+ for(i=0;i<blockSize;i++)
+ {
+ in = pSrc[i];
+ in *= 32768.0f;
+ in += in > 0.0f ? 0.5f : -0.5f;
+ pDst[i] = ref_sat_q15((q31_t)in);
+ }
+}
+
+void ref_float_to_q7(
+ float32_t * pSrc,
+ q7_t * pDst,
+ uint32_t blockSize)
+{
+ uint32_t i;
+ float32_t in;
+
+ for(i=0;i<blockSize;i++)
+ {
+ in = pSrc[i];
+ in *= 128.0f;
+ in += in > 0.0f ? 0.5f : -0.5f;
+ pDst[i] = ref_sat_q7((q15_t)in);
+ }
+}
|