mirrors/postgres
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Silence compiler warnings, fix error in complex compare function.

Browse Source
This commit is contained in:
Bryan Henderson 1997-01-05 21:20:34 +00:00
parent 227015b08e
commit 7bfb924aea
2 changed files with 43 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
src/tutorial/C-code/complex.c
View File

@ -1,3 +1,9 @@
/******************************************************************************
This file contains routines that can be bound to a Postgres backend and
called by the backend in the process of processing queries. The calling
format for these routines is dictated by Postgres architecture.
******************************************************************************/
#include <stdio.h>
/* do not include libpq-fe.h for backend-loaded functions*/
/* #include "libpq-fe.h" */
@ -11,6 +17,20 @@ typedef struct Complex {
double y;
} Complex;
/* These prototypes declare the requirements that Postgres places on these
user written functions.
*/
Complex * complex_in(char *str);
char * complex_out(Complex *complex);
Complex * complex_add(Complex *a, Complex *b);
bool complex_abs_lt(Complex *a, Complex *b);
bool complex_abs_le(Complex *a, Complex *b);
bool complex_abs_eq(Complex *a, Complex *b);
bool complex_abs_ge(Complex *a, Complex *b);
bool complex_abs_gt(Complex *a, Complex *b);
int4 complex_abs_cmp(Complex *a, Complex *b);
/*****************************************************************************
* Input/Output functions
*****************************************************************************/
@ -48,7 +68,7 @@ complex_out(Complex *complex)
return(NULL);
result = (char *) palloc(60);
sprintf(result, "(%lg,%lg)", complex->x, complex->y);
sprintf(result, "(%g,%g)", complex->x, complex->y);
return(result);
}
@ -131,6 +151,7 @@ complex_abs_cmp(Complex *a, Complex *b)
* POSTGRES crashing, it is impossible to tell whether the bug is in your
* code or POSTGRES's.
*/
void test_main(void);
void
test_main()
{

21
src/tutorial/C-code/funcs.c
View File

@ -1,8 +1,29 @@
/******************************************************************************
These are user-defined functions that can be bound to a Postgres backend
and called by Postgres to execute SQL functions of the same name.
The calling format for these functions is defined by the CREATE FUNCTION
SQL statement that binds them to the backend.
*****************************************************************************/
#include <string.h>
#include <stdio.h>
#include "postgres.h" /* for char16, etc. */
#include "utils/palloc.h" /* for palloc */
#include "libpq-fe.h" /* for TUPLE */
#include "executor/executor.h" /* for GetAttributeByName() */
/* The following prototypes declare what we assume the user declares to
Postgres in his CREATE FUNCTION statement.
*/
int add_one(int arg);
char16 * concat16(char16 *arg1, char16 *arg2);
text * copytext(text *t);
bool c_overpaid(TUPLE t, /* the current instance of EMP */
int4 limit);
int
add_one(int arg)