database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-27 23:21:58 +03:00
Code Activity

Add text<->float8 and text<->float4 conversion functions.

Browse Source 
This will fix the problem reported by Jose' Soares
 when trying to cast a float to text.
This commit is contained in:
Thomas G. Lockhart
1998-11-17 14:36:51 +00:00
parent 8d507c204b
commit 643c7beddf
3 changed files with 130 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

92
src/backend/utils/adt/float.c
View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.33 1998/09/01 04:32:32 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.34 1998/11/17 14:36:44 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@ -926,6 +926,96 @@ i2tof(int16 num)
}
/*
* float8_text - converts a float8 number to a text string
*/
text *
float8_text(float64 num)
{
text *result;
int len;
char *str;
str = float8out(num);
len = (strlen(str)+VARHDRSZ);
result = palloc(len);
VARSIZE(result) = len;
memmove(VARDATA(result), str, (len - VARHDRSZ));
pfree(str);
return result;
} /* float8_text() */
/*
* text_float8 - converts a text string to a float8 number
*/
float64
text_float8(text *string)
{
float64 result;
int len;
char *str;
len = (VARSIZE(string) - VARHDRSZ);
str = palloc(len + 1);
memmove(str, VARDATA(string), len);
*(str + len) = '\0';
result = float8in(str);
pfree(str);
return result;
} /* text_float8() */
/*
* float4_text - converts a float4 number to a text string
*/
text *
float4_text(float32 num)
{
text *result;
int len;
char *str;
str = float4out(num);
len = (strlen(str)+VARHDRSZ);
result = palloc(len);
VARSIZE(result) = len;
memmove(VARDATA(result), str, (len - VARHDRSZ));
pfree(str);
return result;
} /* float4_text() */
/*
* text_float4 - converts a text string to a float4 number
*/
float32
text_float4(text *string)
{
float32 result;
int len;
char *str;
len = (VARSIZE(string) - VARHDRSZ);
str = palloc(len + 1);
memmove(str, VARDATA(string), len);
*(str + len) = '\0';
result = float4in(str);
pfree(str);
return result;
} /* text_float4() */
/*
* =======================
* RANDOM FLOAT8 OPERATORS