| 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) |