31 lines
745 B
C
31 lines
745 B
C
/* Add your header comment here */
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#include <sqlite3ext.h>
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SQLITE_EXTENSION_INIT1
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/*
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** The half() SQL function returns half of its input value.
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*/
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static void halfFunc(
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sqlite3_context *context,
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int argc,
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sqlite3_value **argv
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){
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sqlite3_result_double(context, 0.5*sqlite3_value_double(argv[0]));
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}
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/* SQLite invokes this routine once when it loads the extension.
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** Create new functions, collating sequences, and virtual table
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** modules here. This is usually the only exported symbol in
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** the shared library.
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*/
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int sqlite3_extension_init(
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sqlite3 *db,
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char **pzErrMsg,
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const sqlite3_api_routines *pApi
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){
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SQLITE_EXTENSION_INIT2(pApi)
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sqlite3_create_function(db, "half", 1, SQLITE_ANY, 0, halfFunc, 0, 0);
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return 0;
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}
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