1 files changed, 97 insertions, 0 deletions
diff --git a/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_vexp_f32.c b/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_vexp_f32.c
new file mode 100644
index 0000000..43b2a86
--- /dev/null
+++ b/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_vexp_f32.c
@@ -0,0 +1,97 @@
+/* ----------------------------------------------------------------------
+ * Project:      CMSIS DSP Library
+ * Title:        arm_vlog_f32.c
+ * Description:  Fast vectorized log
+ *
+ * $Date:        23 April 2021
+ * $Revision:    V1.9.0
+ *
+ * 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/fast_math_functions.h"
+#include "arm_common_tables.h"
+
+#if (defined(ARM_MATH_MVEF) || defined(ARM_MATH_HELIUM) || defined(ARM_MATH_NEON) || defined(ARM_MATH_NEON_EXPERIMENTAL)) && !defined(ARM_MATH_AUTOVECTORIZE)
+#include "arm_vec_math.h"
+#endif
+
+void arm_vexp_f32(
+  const float32_t * pSrc,
+        float32_t * pDst,
+        uint32_t blockSize)
+{
+   uint32_t blkCnt; 
+
+#if (defined(ARM_MATH_MVEF) || defined(ARM_MATH_HELIUM)) && !defined(ARM_MATH_AUTOVECTORIZE)
+   f32x4_t src;
+   f32x4_t dst;
+
+   blkCnt = blockSize >> 2;
+
+   while (blkCnt > 0U)
+   {
+      src = vld1q(pSrc);
+      dst = vexpq_f32(src);
+      vst1q(pDst, dst);
+
+      pSrc += 4;
+      pDst += 4;
+      /* Decrement loop counter */
+      blkCnt--;
+   }
+
+   blkCnt = blockSize & 3;
+#else
+#if (defined(ARM_MATH_NEON) || defined(ARM_MATH_NEON_EXPERIMENTAL)) && !defined(ARM_MATH_AUTOVECTORIZE)
+   f32x4_t src;
+   f32x4_t dst;
+
+   blkCnt = blockSize >> 2;
+
+   while (blkCnt > 0U)
+   {
+      src = vld1q_f32(pSrc);
+      dst = vexpq_f32(src);
+      vst1q_f32(pDst, dst);
+
+      pSrc += 4;
+      pDst += 4;
+      /* Decrement loop counter */
+      blkCnt--;
+   }
+
+   blkCnt = blockSize & 3;
+#else
+   blkCnt = blockSize;
+#endif
+#endif
+
+   while (blkCnt > 0U)
+   {
+      /* C = log(A) */
+  
+      /* Calculate log and store result in destination buffer. */
+      *pDst++ = expf(*pSrc++);
+  
+      /* Decrement loop counter */
+      blkCnt--;
+   }
+}