SPRINTMT(3)                    Library Routines                    SPRINTMT(3)




NAME

       sprintmt, vsprintmt - multi threading safe print formatting


SYNOPSIS

       #include <gno/gno.h>

       char *sprintmt (char *buffer, size_t bufferlen, const char *fmt, ...);
       char  *vsprintmt  (char  *buffer,  size_t  bufferlen,  const char *fmt,
       va_list ap);


DESCRIPTION

       sprintmt and vsprintmt are multithread-safe versions of the  sprintf(3)
       and vsprintf(3) routines.

       The  contents of the format string fmt, with appropriate arguments sub-
       stituted for the format specifiers, is copied into  the  user  supplied
       buffer.  At most, bufferlen-1 characters will be written to buffer.

       These  routines  have a much more limited set of format specifiers than
       do the usual stdio routines.  They are:

              %d, %ld
                     Print the decimal representation of a value of  type  int
                     or long int, respectively.

              %u, %lu
                     Print  the  decimal  representation  of  a  value of type
                     unsigned int or unsigned long int, respectively.

              %x, %X, %lx, %lX
                     Print the hexadecimal representation of an  unsigned  int
                     or unsigned long int.  If the x character is used, alpha-
                     betic characters are in lower case; otherwise they are in
                     upper case.

              %s     Print  a NULL-terminated string.  If the 's' is preceeded
                     by an 'l', the 'l' is ignored.

              %m     Print the current textual  representation  of  errno,  as
                     returned  by  strerror(3).  If the 'm' is preceeded by an
                     'l', the 'l' is ignored.  This format  specifier  is  not
                     available in the usual stdio functions.


RETURN VALUE

       These routines return a pointer to the terminating NULL byte in buffer.


MT STATUS

       Safe.


SEE ALSO

       printf(3), stdio(3), strerror(3).



GNO                             24 October 1998                    SPRINTMT(3)

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