Where

逐元素根据条件选择两个输入中的元素

\[\begin{split}output_i = \begin{cases} input0_i, & \text{if } condition_i \text{ is True} \\ input1_i, & \text{if } condition_i \text{ is False} \end{cases}\end{split}\]
输入：

  • input0 - 第一个输入数据地址。

  • input1 - 第二个输入数据地址。

  • condition - 条件数据地址。

  • length - 计算长度。

  • core_mask - 核掩码（仅共享存储版本需要）。

输出：

  • output - 计算结果地址。

支持平台：

FT78NE MT7004

备注

  • FT78NE 支持int8, int16, int32, fp16, fp32, fp64, cplx64, cplx128

  • MT7004 支持fp16, fp32, int16, int32, cplx64

共享存储版本:

void i8_where_s(int8_t *input0, int8_t *input1, bool *condition, int8_t *output, int length, int core_mask)
void i16_where_s(int16_t *input0, int16_t *input1, bool *condition, int16_t *output, int length, int core_mask)
void i32_where_s(int32_t *input0, int32_t *input1, bool *condition, int32_t *output, int length, int core_mask)
void hp_where_s(half *input0, half *input1, bool *condition, half *output, int length, int core_mask)
void fp_where_s(float *input0, float *input1, bool *condition, float *output, int length, int core_mask)
void dp_where_s(double *input0, double *input1, bool *condition, double *output, int length, int core_mask)
void c64_where_s(float *input0, float *input1, bool *condition, float *output, int length, int core_mask)
void c128_where_s(double *input0, double *input1, bool *condition, double *output, int length, int core_mask)

C调用示例：

 1//FT78NE示例
 2#include <stdio.h>
 3#include <where.h>
 4int main(int argc, char* argv[]) {
 5    float *input0 = (float *)0xA0000000;   //input0在DDR空间
 6    float *input1 = (float *)0xB0000000;   //input1在DDR空间
 7    bool *condition = (bool *)0xC0000000;  //condition在DDR空间
 8    float *output = (float *)0xD0000000;   //output在DDR空间
 9    int length = 1000;
10    int core_mask = 0xff;
11    fp_where_s(input0, input1, condition, output, length, core_mask);
12    return 0;
13}

私有存储版本:

void i8_where_p(int8_t *input0, int8_t *input1, bool *condition, int8_t *output, int length)
void i16_where_p(int16_t *input0, int16_t *input1, bool *condition, int16_t *output, int length)
void i32_where_p(int32_t *input0, int32_t *input1, bool *condition, int32_t *output, int length)
void hp_where_p(half *input0, half *input1, bool *condition, half *output, int length)
void fp_where_p(float *input0, float *input1, bool *condition, float *output, int length)
void dp_where_p(double *input0, double *input1, bool *condition, double *output, int length)
void c64_where_p(float *input0, float *input1, bool *condition, float *output, int length)
void c128_where_p(double *input0, double *input1, bool *condition, double *output, int length)

C调用示例：

 1//FT78NE示例
 2#include <stdio.h>
 3#include <where.h>
 4int main(int argc, char* argv[]) {
 5    float *input0 = (float *)0x10000000;   //input0在L2空间
 6    float *input1 = (float *)0x10001000;   //input1在L2空间
 7    bool *condition = (bool *)0x10002000;  //condition在L2空间
 8    float *output = (float *)0x10003000;   //output在L2空间
 9    int length = 1000;
10    fp_where_p(input0, input1, condition, output, length);
11    return 0;
12}