diff options
Diffstat (limited to 'Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/HelperFunctions/ref_helper.c')
| -rw-r--r-- | Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/HelperFunctions/ref_helper.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/HelperFunctions/ref_helper.c b/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/HelperFunctions/ref_helper.c new file mode 100644 index 0000000..57ecf1b --- /dev/null +++ b/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/HelperFunctions/ref_helper.c @@ -0,0 +1,103 @@ +#include "ref.h"
+
+float32_t scratchArray[8192*2];
+
+arm_cfft_instance_f32 ref_cfft_sR_f32_len8192 = { 8192, 0, 0, 0 };
+
+q31_t ref_sat_n(q31_t num, uint32_t bits)
+{
+ int32_t posMax, negMin;
+ uint32_t i;
+
+ posMax = 1;
+ for (i = 0; i < (bits - 1); i++)
+ {
+ posMax = posMax * 2;
+ }
+
+ if (num > 0)
+ {
+ posMax = (posMax - 1);
+
+ if (num > posMax)
+ {
+ num = posMax;
+ }
+ }
+ else
+ {
+ negMin = -posMax;
+
+ if (num < negMin)
+ {
+ num = negMin;
+ }
+ }
+ return (num);
+}
+
+q31_t ref_sat_q31(q63_t num)
+{
+ if (num > (q63_t)INT_MAX)
+ {
+ return INT_MAX;
+ }
+ else if (num < (q63_t)0xffffffff80000000ll)
+ {
+ return INT_MIN;
+ }
+ else
+ {
+ return (q31_t)num;
+ }
+}
+
+q15_t ref_sat_q15(q31_t num)
+{
+ if (num > (q31_t)SHRT_MAX)
+ {
+ return SHRT_MAX;
+ }
+ else if (num < (q31_t)0xffff8000)
+ {
+ return SHRT_MIN;
+ }
+ else
+ {
+ return (q15_t)num;
+ }
+}
+
+q7_t ref_sat_q7(q15_t num)
+{
+ if (num > (q15_t)SCHAR_MAX)
+ {
+ return SCHAR_MAX;
+ }
+ else if (num < (q15_t)0xff80)
+ {
+ return SCHAR_MIN;
+ }
+ else
+ {
+ return (q7_t)num;
+ }
+}
+
+float32_t ref_pow(float32_t a, uint32_t b)
+{
+ uint32_t i;
+ float32_t r = a;
+
+ for(i=1;i<b;i++)
+ {
+ r *= a;
+ }
+
+ if ( b == 0)
+ {
+ return 1;
+ }
+
+ return r;
+}
|