4.47 iprintf, fiprintf, asiprintf, siprintf, sniprintf—format output

Synopsis

     #include <stdio.h>
     
     int iprintf(const char *format [, arg, ...]);
     int fiprintf(FILE *fd, const char *format [, arg, ...]);
     int siprintf(char *str, const char *format [, arg, ...]);
     int asiprintf(char **strp, const char *format [, arg, ...]);
     int sniprintf(char *str, size_t size, const char *format
         [, arg, ...]);
     

Description
iprintf, fiprintf, siprintf, sniprintf, asiprintf, are the same as printf, fprintf, sprintf, snprintf, and asprintf, respectively, only that they restrict usage to non-floating-point format specifiers.

Returns
siprintf and asiprintf return the number of bytes in the output string, save that the concluding NULL is not counted. iprintf and fiprintf return the number of characters transmitted. If an error occurs, iprintf and fiprintf return EOF and asiprintf returns -1. No error returns occur for siprintf.

Portability
iprintf, fiprintf, siprintf, sniprintf, and asprintf are newlib extensions.

Supporting OS subroutines required: close, fstat, isatty, lseek, read, sbrk, write.