CMSIS-DSP: Update to Python wrapper
New functions added.
diff --git a/CMSIS/DSP/PythonWrapper/fixedpoint.py b/CMSIS/DSP/PythonWrapper/fixedpoint.py
new file mode 100755
index 0000000..896de20
--- /dev/null
+++ b/CMSIS/DSP/PythonWrapper/fixedpoint.py
@@ -0,0 +1,49 @@
+import numpy as np
+
+def q31sat(x):
+ if x > 0x7FFFFFFF:
+ return(np.int32(0x7FFFFFFF))
+ elif x < -0x80000000:
+ return(np.int32(0x80000000))
+ else:
+ return(np.int32(x))
+
+q31satV=np.vectorize(q31sat)
+
+def toQ31(x):
+ return(q31satV(np.round(x * (1<<31))))
+
+def q15sat(x):
+ if x > 0x7FFF:
+ return(np.int16(0x7FFF))
+ elif x < -0x8000:
+ return(np.int16(0x8000))
+ else:
+ return(np.int16(x))
+
+q15satV=np.vectorize(q15sat)
+
+def toQ15(x):
+ return(q15satV(np.round(x * (1<<15))))
+
+def q7sat(x):
+ if x > 0x7F:
+ return(np.int8(0x7F))
+ elif x < -0x80:
+ return(np.int8(0x80))
+ else:
+ return(np.int8(x))
+
+q7satV=np.vectorize(q7sat)
+
+def toQ7(x):
+ return(q7satV(np.round(x * (1<<7))))
+
+def Q31toF32(x):
+ return(1.0*x / 2**31)
+
+def Q15toF32(x):
+ return(1.0*x / 2**15)
+
+def Q7toF32(x):
+ return(1.0*x / 2**7)
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