The rfmtdouble() function
The rfmtdouble() function uses a formatting mask to convert a C double value to a character string.
Syntax
mint rfmtdouble(dbl_val, fmtstring, outbuf)
double dbl_val;
char *fmtstring;
char *outbuf;- dbl_val
- The double number to format.
- fmtstring
- A pointer to a character buffer that contains the formatting mask for the value in dbl_val.
- outbuf
- A pointer to a character buffer to contain the formatted string for the value in dbl_val.
Usage
The fmtstring argument of the rfmtdouble() function points to the numeric-formatting mask, which contains characters that describe how to format the double value.
When you use rfmtdouble() to
format MONEY values, the function uses the currency symbols that the DBMONEY environment
variable specifies. If you do not set this environment variable, rfmtdouble() uses
the currency symbols that the client locale defines. The default locale,
U.S. English, defines currency symbols as if you set DBMONEY to
‘$,.’. (For a discussion of DBMONEY,
see the Informix® Guide to SQL:
Reference.)
When you use a nondefault locale that has a multibyte code set, rfmtdouble() supports multibyte characters in the format string. For more information, see the Informix® GLS User's Guide.
Return values
- 0
- The conversion was successful.
- -1211
- The program ran out of memory (memory-allocation error).
- -1217
- The format string is too large.