From 5b81bc8ccbd342b8566d88fc9f17a73aec03b5b6 Mon Sep 17 00:00:00 2001
From: Clyne Sullivan <clyne@bitgloo.com>
Date: Wed, 29 Jan 2025 21:34:25 -0500
Subject: initial commit
---
.../Source/StatisticsFunctions/arm_absmin_f64.c | 90 ++++++++++++++++++++++
1 file changed, 90 insertions(+)
create mode 100644 Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_absmin_f64.c
(limited to 'Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_absmin_f64.c')
diff --git a/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_absmin_f64.c b/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_absmin_f64.c
new file mode 100644
index 0000000..7aac970
--- /dev/null
+++ b/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_absmin_f64.c
@@ -0,0 +1,90 @@
+/* ----------------------------------------------------------------------
+ * Project: CMSIS DSP Library
+ * Title: arm_absmin_f64.c
+ * Description: Minimum value of absolute values of a floating-point vector
+ *
+ * $Date: 13 September 2021
+ * $Revision: V1.10.0
+ *
+ * Target Processor: Cortex-M and Cortex-A cores
+ * -------------------------------------------------------------------- */
+/*
+ * Copyright (C) 2010-2021 ARM Limited or its affiliates. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "dsp/statistics_functions.h"
+
+/**
+ @ingroup groupStats
+ */
+
+/**
+ @addtogroup AbsMin
+ @{
+ */
+
+/**
+ @brief Minimum value of absolute values of a floating-point vector.
+ @param[in] pSrc points to the input vector
+ @param[in] blockSize number of samples in input vector
+ @param[out] pResult minimum value returned here
+ @param[out] pIndex index of minimum value returned here
+ @return none
+ */
+void arm_absmin_f64(
+ const float64_t * pSrc,
+ uint32_t blockSize,
+ float64_t * pResult,
+ uint32_t * pIndex)
+{
+ float64_t minVal, out; /* Temporary variables to store the output value. */
+ uint32_t blkCnt, outIndex; /* Loop counter */
+
+ /* Initialise index value to zero. */
+ outIndex = 0U;
+
+ /* Load first input value that act as reference value for comparision */
+ out = fabs(*pSrc++);
+
+ /* Initialize blkCnt with number of samples */
+ blkCnt = (blockSize - 1U);
+
+ while (blkCnt > 0U)
+ {
+ /* Initialize minVal to the next consecutive values one by one */
+ minVal = fabs(*pSrc++);
+
+ /* compare for the minimum value */
+ if (out > minVal)
+ {
+ /* Update the minimum value and it's index */
+ out = minVal;
+ outIndex = blockSize - blkCnt;
+ }
+
+ /* Decrement loop counter */
+ blkCnt--;
+ }
+
+ /* Store the minimum value and it's index into destination pointers */
+ *pResult = out;
+ *pIndex = outIndex;
+}
+
+/**
+ @} end of AbsMin group
+ */
--
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