API Calling Example

Create a test.cpp file.

Add the following code to the test.cpp file.

#include "hmpp.h"
#define BUFFER_SIZE_T 500
void AddExample() {
    uint32_t *src1 = HMPPS_Malloc_32u(BUFFER_SIZE_T);
    uint32_t *src2 = HMPPS_Malloc_32u(BUFFER_SIZE_T);
    uint32_t *dst = HMPPS_Malloc_32u(BUFFER_SIZE_T);
    int32_t i, result;

    if (src1 == NULL || src2 == NULL || dst == NULL) {
        return;
    }
    for (i = 0; i < BUFFER_SIZE_T; ++i) {
         src1[i] = i;
         src2[i] = i + 1;
    }
    
    result = HMPPS_Add_32u(src1, src2, dst, BUFFER_SIZE_T);
    printf("result = %d \n dst = ", result);
    for (i = 0; i < BUFFER_SIZE_T; i++) {
        printf("%d ", dst[i]);
    }
    printf("\n");

    HMPPS_Free(src1);
    HMPPS_Free(src2);
    HMPPS_Free(dst);
}

int main(void){
    AddExample();
    return 0;
}

Example of Compiling and Executing a File

Compile the file.

g++ test.cpp -o test -lHMPP_fft -lHMPP_fftf -lHMPP_signal -lHMPP_core -lHMPP_image

Execute the file.
```
./test
```

Troubleshooting

Symptom:

"fatal error: hmpp.h: No such file or directory"
"./test: error while loading shared libraries: libHMPP_core.so.xxxx: cannot open shared object file: No such file or directory"

xxxx indicates the version number.

Procedure:

Check whether header files and dynamic libraries exist in /usr/local/include/HMPP and /usr/local/lib/HMPP.

Add environment variables.

Open /etc/profile.
```
vi /etc/profile
```

Add the following environment variables to the file:

export C_INCLUDE_PATH=$C_INCLUDE_PATH:/usr/local/include/HMPP
export CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:/usr/local/include/HMPP
if [ ! -n "$LD_LIBRARY_PATH" ]
then
        export LD_LIBRARY_PATH=/usr/local/lib/HMPP
else
        export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib/HMPP
fi

Press Esc, type :wq!, and press Enter to save the file and exit.

Make the configuration file take effect.
```
source /etc/profile
```

Parent topic: Using the HMPP