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/* $Id: mysql_casts.c 1127 2012-08-08 07:49:29Z fabien $ */
// minimal headers
#include <stdint.h>
#include <my_global.h>
#include <mysql.h>
/* foo_init, foo, foo_deinit */
my_bool biginttoint8_init(UDF_INIT *, UDF_ARGS *, char *);
longlong biginttoint8(UDF_INIT *, UDF_ARGS *, char *, char *);
my_bool biginttoint4_init(UDF_INIT *, UDF_ARGS *, char *);
longlong biginttoint4(UDF_INIT *, UDF_ARGS *, char *, char *);
my_bool biginttoint2_init(UDF_INIT *, UDF_ARGS *, char *);
longlong biginttoint2(UDF_INIT *, UDF_ARGS *, char *, char *);
longlong biginttoint8(
UDF_INIT *initid __attribute__((unused)),
UDF_ARGS *args,
char *is_null,
char *error __attribute__((unused)))
{
// if in doubt, return NULL
if (args->arg_count!=1 || args->arg_type[0]!=INT_RESULT || !args->args[0]) {
*is_null = 1;
return 0;
}
return *((longlong*) args->args[0]);
}
my_bool biginttoint8_init(
UDF_INIT *initid __attribute__((unused)),
UDF_ARGS *args __attribute__((unused)),
char *message __attribute__((unused)))
{
return 0;
}
longlong biginttoint4(
UDF_INIT *initid __attribute__((unused)),
UDF_ARGS *args,
char *is_null,
char *error __attribute__((unused)))
{
// if in doubt, return NULL
if (args->arg_count!=1 || args->arg_type[0]!=INT_RESULT || !args->args[0]) {
*is_null = 1;
return 0;
}
return (longlong)
((int32_t) (*((longlong*) args->args[0]) & 0x00000000ffffffffLL));
}
my_bool biginttoint4_init(
UDF_INIT *initid __attribute__((unused)),
UDF_ARGS *args __attribute__((unused)),
char *message __attribute__((unused)))
{
return 0;
}
longlong biginttoint2(
UDF_INIT *initid __attribute__((unused)),
UDF_ARGS *args,
char *is_null,
char *error __attribute__((unused)))
{
// if in doubt, return NULL
if (args->arg_count!=1 || args->arg_type[0]!=INT_RESULT || !args->args[0]) {
*is_null = 1;
return 0;
}
return (longlong)
((int16_t)(*((longlong*) args->args[0]) & 0x000000000000ffffLL));
}
my_bool biginttoint2_init(
UDF_INIT *initid __attribute__((unused)),
UDF_ARGS *args __attribute__((unused)),
char *message __attribute__((unused)))
{
return 0;
}
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