gvcvt
, gcvtf
---format double or float as string#include <stdlib.h> char *gcvt(double val, int precision, char *buf); char *gcvtf(float val, int precision, char *buf);Description
gcvt
writes a fully formatted number as a null-terminated
string in the buffer *buf
. gdvtf
produces corresponding
character representations of float
numbers.
gcvt
uses the same rules as the printf
format
`%.precisiong
'---only negative values are signed (with
`-
'), and either exponential or ordinary decimal-fraction format
is chosen depending on the number of significant digits (specified by
precision).
Returns
The result is a pointer to the formatted representation of val
(the same as the argument buf).
Portability
Neither function is ANSI C.
Supporting OS subroutines required: close
, fstat
, isatty
,
lseek
, read
, sbrk
, write
.