From 76177aa280494bb36d7a0bcbda1078d4db717020 Mon Sep 17 00:00:00 2001 From: Ali Labbene Date: Mon, 9 Dec 2019 11:25:19 +0100 Subject: Official ARM version: v4.5 --- Documentation/DSP/html/group__float__to__x.html | 298 ++++++++++++++++++++++++ 1 file changed, 298 insertions(+) create mode 100644 Documentation/DSP/html/group__float__to__x.html (limited to 'Documentation/DSP/html/group__float__to__x.html') diff --git a/Documentation/DSP/html/group__float__to__x.html b/Documentation/DSP/html/group__float__to__x.html new file mode 100644 index 0000000..3fe0347 --- /dev/null +++ b/Documentation/DSP/html/group__float__to__x.html @@ -0,0 +1,298 @@ + + + + + +Convert 32-bit floating point value +CMSIS-DSP: Convert 32-bit floating point value + + + + + + + + + + + + + + + +
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CMSIS-DSP +  Version 1.4.7 +
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CMSIS DSP Software Library
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+Functions
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Convert 32-bit floating point value
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Support Functions
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+Functions

void arm_float_to_q15 (float32_t *pSrc, q15_t *pDst, uint32_t blockSize)
 Converts the elements of the floating-point vector to Q15 vector.
 
void arm_float_to_q31 (float32_t *pSrc, q31_t *pDst, uint32_t blockSize)
 Converts the elements of the floating-point vector to Q31 vector.
 
void arm_float_to_q7 (float32_t *pSrc, q7_t *pDst, uint32_t blockSize)
 Converts the elements of the floating-point vector to Q7 vector.
 
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Description

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Function Documentation

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void arm_float_to_q15 (float32_t * pSrc,
q15_t * pDst,
uint32_t blockSize 
)
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Parameters
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[in]*pSrcpoints to the floating-point input vector
[out]*pDstpoints to the Q15 output vector
[in]blockSizelength of the input vector
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Returns
none.
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Description:
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The equation used for the conversion process is: 
    
+        pDst[n] = (q15_t)(pSrc[n] * 32768);   0 <= n < blockSize.    
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Scaling and Overflow Behavior:
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The function uses saturating arithmetic. Results outside of the allowable Q15 range [0x8000 0x7FFF] will be saturated.
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Note
In order to apply rounding, the library should be rebuilt with the ROUNDING macro defined in the preprocessor section of project options.
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References blockSize.

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void arm_float_to_q31 (float32_t * pSrc,
q31_t * pDst,
uint32_t blockSize 
)
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Parameters
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[in]*pSrcpoints to the floating-point input vector
[out]*pDstpoints to the Q31 output vector
[in]blockSizelength of the input vector
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Returns
none.
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Description:
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The equation used for the conversion process is:
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+        pDst[n] = (q31_t)(pSrc[n] * 2147483648);   0 <= n < blockSize.    
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Scaling and Overflow Behavior:

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The function uses saturating arithmetic. Results outside of the allowable Q31 range[0x80000000 0x7FFFFFFF] will be saturated.
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Note
In order to apply rounding, the library should be rebuilt with the ROUNDING macro defined in the preprocessor section of project options.
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Examples:
arm_graphic_equalizer_example_q31.c.
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References blockSize, and clip_q63_to_q31().

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Referenced by main().

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void arm_float_to_q7 (float32_t * pSrc,
q7_t * pDst,
uint32_t blockSize 
)
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Parameters
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[in]*pSrcpoints to the floating-point input vector
[out]*pDstpoints to the Q7 output vector
[in]blockSizelength of the input vector
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Returns
none.
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Description:
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The equation used for the conversion process is: 
    
+        pDst[n] = (q7_t)(pSrc[n] * 128);   0 <= n < blockSize.    
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Scaling and Overflow Behavior:
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The function uses saturating arithmetic. Results outside of the allowable Q7 range [0x80 0x7F] will be saturated.
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Note
In order to apply rounding, the library should be rebuilt with the ROUNDING macro defined in the preprocessor section of project options.
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References blockSize.

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+ + + + -- cgit