58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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typedef struct SUdfInit{
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int maybe_null; /* 1 if function can return NULL */
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int decimals; /* for real functions */
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long long length; /* For string functions */
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char *ptr; /* free pointer for function data */
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int const_item; /* 0 if result is independent of arguments */
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} SUdfInit;
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void sum_double(char* data, char type, int numOfRows, long long* ts, char* dataOutput, char* tsOutput,
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int* numOfOutput, SUdfInit* buf) {
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int i;
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int r = 0;
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printf("sum_double input data:%p, type:%d, rows:%d, ts:%p,%lld, dataoutput:%p, tsOutput:%p, numOfOutput:%p, buf:%p\n", data, type, numOfRows, ts, *ts, dataOutput, tsOutput, numOfOutput, buf);
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if (type == 4) {
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r=*(int *)dataOutput;
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for(i=0;i<numOfRows;++i) {
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r+=*((int *)data + i);
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if (tsOutput) {
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*(long long*)tsOutput=1000000;
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}
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}
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*(int *)dataOutput=r;
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*numOfOutput=1;
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printf("sum_double out, dataoutput:%d, numOfOutput:%d\n", *(int *)dataOutput, *numOfOutput);
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}
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}
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void sum_double_finalize(char* dataOutput, int* numOfOutput, SUdfInit* buf) {
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int i;
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int r = 0;
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printf("sum_double_finalize dataoutput:%p, numOfOutput:%p, buf:%p\n", dataOutput, numOfOutput, buf);
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*numOfOutput=1;
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*(int*)(buf->ptr)=*(int*)dataOutput*2;
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*(int*)dataOutput=*(int*)(buf->ptr);
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printf("sum_double finalize, dataoutput:%d, numOfOutput:%d\n", *(int *)dataOutput, *numOfOutput);
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}
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int sum_double_init(SUdfInit* buf) {
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buf->maybe_null=1;
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buf->ptr = malloc(sizeof(int));
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printf("sum_double init\n");
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return 0;
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}
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void sum_double_destroy(SUdfInit* buf) {
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free(buf->ptr);
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printf("sum_double destroy\n");
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}
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