debian man page for fmt_double

fmt_double(3)						     Library Functions Manual						     fmt_double(3)

NAME
       fmt_double - write an ASCII representation of a double

SYNTAX
       #include <fmt.h>

       size_t fmt_double(char *dest,double d,size_t maxlen,size_t prec);

DESCRIPTION
       fmt_double  writes an ASCII representation ('0' to '9', base 10) of d to dest and returns the number of bytes written.  No more than maxlen
       bytes will be written.  prec digits will be written, using scientific notation if necessary.

       fmt_double does not append .

       If dest equals FMT_LEN (i.e. is zero), fmt_double returns the number of bytes it would have written.

SEE ALSO
       scan_double(3)

																     fmt_double(3)