83 lines
3.2 KiB
ReStructuredText
83 lines
3.2 KiB
ReStructuredText
Minimum
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=================
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对两个输入数据执行逐元素取最小值操作。对于每一对对应的输入元素,比较其大小,并将较小者存入输出地址。
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.. math::
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output_i = \min(input0_i, input1_i)
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输入:
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- **input0** - 第一个输入数据地址。
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- **input1** - 第二个输入数据地址。
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- **length** - 计算长度。
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- **core_mask(int, 可选)** - 核掩码(仅适用于共享存储版本)。
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输出:
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- **output** - 计算结果地址。
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支持平台:
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``FT78NE``
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``MT7004``
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.. note::
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- FT78NE 支持:int8 (i8), int16 (i16), int32 (i32), fp32 (fp), fp64 (dp)
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- MT7004 支持:int16 (i16), int32 (i32), fp16 (hp), fp32 (fp)
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- 两个输入数据与输出数据的数据类型必须一致。
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**共享存储版本:**
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.. c:function:: void i8_minimum_s(int8_t* input0, int8_t* input1, int8_t* output, int length, int core_mask)
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.. c:function:: void i16_minimum_s(int16_t* input0, int16_t* input1, int16_t* output, int length, int core_mask)
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.. c:function:: void i32_minimum_s(int32_t* input0, int32_t* input1, int32_t* output, int length, int core_mask)
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.. c:function:: void hp_minimum_s(half* input0, half* input1, half* output, int length, int core_mask)
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.. c:function:: void fp_minimum_s(float* input0, float* input1, float* output, int length, int core_mask)
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.. c:function:: void dp_minimum_s(double* input0, double* input1, double* output, int length, int core_mask)
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**C调用示例:**
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.. code-block:: c
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:linenos:
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:emphasize-lines: 11
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// FT78NE 示例(共享存储多核并行)
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#include <stdio.h>
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#include "78NE/utils.h"
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int main(int argc, char* argv[]) {
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double *in0 = (double *)0xA0000000; // 输入0在共享存储空间
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double *in1 = (double *)0xA1000000; // 输入1在共享存储空间
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double *out = (double *)0xB0000000; // 输出在共享存储空间
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int length = 960001;
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int core_mask = 0xFF; // 使用所有核心并行计算
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dp_minimum_s(in0, in1, out, length, core_mask);
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return 0;
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}
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**私有存储版本:**
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.. c:function:: void i8_minimum_p(int8_t* input0, int8_t* input1, int8_t* output, int length)
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.. c:function:: void i16_minimum_p(int16_t* input0, int16_t* input1, int16_t* output, int length)
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.. c:function:: void i32_minimum_p(int32_t* input0, int32_t* input1, int32_t* output, int length)
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.. c:function:: void hp_minimum_p(half* input0, half* input1, half* output, int length)
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.. c:function:: void fp_minimum_p(float* input0, float* input1, float* output, int length)
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.. c:function:: void dp_minimum_p(double* input0, double* input1, double* output, int length)
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**C调用示例:**
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.. code-block:: c
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:linenos:
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:emphasize-lines: 10
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// MT7004 示例(私有存储单核)
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#include <stdio.h>
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int main(int argc, char* argv[]) {
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// 输入与输出均位于芯片私有存储空间
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half *in0 = (half *)0x10000000;
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half *in1 = (half *)0x10001000;
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half *out = (half *)0x10002000;
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int length = 1024;
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hp_minimum_p(in0, in1, out, length);
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return 0;
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} |