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.TH fmt_double 3
fmt_double \- write an ASCII representation of a double
.B #include <fmt.h>
unsigned int \fBfmt_double\fP(char *\fIdest\fR,double \fId\fR,int
\fImaxlen\fR,int \fIprec\fR);
fmt_double writes an ASCII representation ('0' to '9', base 10) of
\fId\fR to \fIdest\fR and returns the number of bytes written. No more
than \fImaxlen\fR bytes will be written. \fIprec\fR digits will be
written, using scientific notation if necessary.
fmt_double does not append \\0.
If \fIdest\fR equals FMT_LEN (i.e. is zero), fmt_double returns the
number of bytes it would have written.