增加所有文件

2025-11-07 20:19:23 +08:00
parent b7376523b6
commit 846bd3bbda
8445 changed files with 3006231 additions and 5934 deletions
--- a/CMSIS/DSP/Source/InterpolationFunctions/arm_bilinear_interp_f16.c
+++ b/CMSIS/DSP/Source/InterpolationFunctions/arm_bilinear_interp_f16.c
@@ -0,0 +1,117 @@
+/* ----------------------------------------------------------------------
+ * Project:      CMSIS DSP Library
+ * Title:        arm_bilinear_interp_f16.c
+ * Description:  Floating-point bilinear interpolation
+ *
+ * $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/interpolation_functions_f16.h"
+
+#if defined(ARM_FLOAT16_SUPPORTED)
+
+
+/**
+  @ingroup groupInterpolation
+ */
+
+
+
+  /**
+   * @addtogroup BilinearInterpolate
+   * @{
+   */
+
+
+  /**
+  * @brief  Floating-point bilinear interpolation.
+  * @param[in,out] S  points to an instance of the interpolation structure.
+  * @param[in]     X  interpolation coordinate.
+  * @param[in]     Y  interpolation coordinate.
+  * @return out interpolated value.
+  */
+  float16_t arm_bilinear_interp_f16(
+  const arm_bilinear_interp_instance_f16 * S,
+  float16_t X,
+  float16_t Y)
+  {
+    float16_t out;
+    float16_t f00, f01, f10, f11;
+    const float16_t *pData = S->pData;
+    int32_t xIndex, yIndex, index;
+    float16_t xdiff, ydiff;
+    float16_t b1, b2, b3, b4;
+
+    xIndex = (int32_t) X;
+    yIndex = (int32_t) Y;
+
+    /* Care taken for table outside boundary */
+    /* Returns zero output when values are outside table boundary */
+    if (xIndex < 0 || xIndex > (S->numCols - 2) || yIndex < 0 || yIndex > (S->numRows - 2))
+    {
+      return (0);
+    }
+
+    /* Calculation of index for two nearest points in X-direction */
+    index = (xIndex ) + (yIndex ) * S->numCols;
+
+
+    /* Read two nearest points in X-direction */
+    f00 = pData[index];
+    f01 = pData[index + 1];
+
+    /* Calculation of index for two nearest points in Y-direction */
+    index = (xIndex ) + (yIndex+1) * S->numCols;
+
+
+    /* Read two nearest points in Y-direction */
+    f10 = pData[index];
+    f11 = pData[index + 1];
+
+    /* Calculation of intermediate values */
+    b1 = f00;
+    b2 = (_Float16)f01 - (_Float16)f00;
+    b3 = (_Float16)f10 - (_Float16)f00;
+    b4 = (_Float16)f00 - (_Float16)f01 - (_Float16)f10 + (_Float16)f11;
+
+    /* Calculation of fractional part in X */
+    xdiff = (_Float16)X - (_Float16)xIndex;
+
+    /* Calculation of fractional part in Y */
+    ydiff = (_Float16)Y - (_Float16)yIndex;
+
+    /* Calculation of bi-linear interpolated output */
+    out = (_Float16)b1 + (_Float16)b2 * (_Float16)xdiff + 
+    (_Float16)b3 * (_Float16)ydiff + (_Float16)b4 * (_Float16)xdiff * (_Float16)ydiff;
+
+    /* return to application */
+    return (out);
+  }
+
+  /**
+   * @} end of BilinearInterpolate group
+   */
+
+
+#endif /* #if defined(ARM_FLOAT16_SUPPORTED) */ 
+