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Diffstat (limited to 'newlib/libc/stdio/siprintf.c')
-rw-r--r-- | newlib/libc/stdio/siprintf.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/newlib/libc/stdio/siprintf.c b/newlib/libc/stdio/siprintf.c new file mode 100644 index 0000000..40bd016 --- /dev/null +++ b/newlib/libc/stdio/siprintf.c @@ -0,0 +1,70 @@ +/* +FUNCTION + <<siprintf>>---write formatted output (integer only) +INDEX + siprintf + +ANSI_SYNOPSIS + #include <stdio.h> + + int siprintf(char *<[str]>, const char *<[format]> [, <[arg]>, ...]); + + +DESCRIPTION +<<siprintf>> is a restricted version of <<sprintf>>: it has the same +arguments and behavior, save that it cannot perform any floating-point +formatting: the <<f>>, <<g>>, <<G>>, <<e>>, and <<F>> type specifiers +are not recognized. + +RETURNS + <<siprintf>> returns the number of bytes in the output string, + save that the concluding <<NULL>> is not counted. + <<siprintf>> returns when the end of the format string is + encountered. + +PORTABILITY +<<siprintf>> is not required by ANSI C. + +Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, +<<lseek>>, <<read>>, <<sbrk>>, <<write>>. +*/ + +#include <stdio.h> +#ifdef _HAVE_STDC +#include <stdarg.h> +#else +#include <varargs.h> +#endif +#include <limits.h> +#include <_ansi.h> +#include <reent.h> +#include "local.h" + +int +#ifdef _HAVE_STDC +_DEFUN (siprintf, (str, fmt), char *str _AND _CONST char *fmt _DOTS) +#else +siprintf (str, fmt, va_alist) + char *str; + _CONST char *fmt; + va_dcl +#endif +{ + int ret; + va_list ap; + FILE f; + + f._flags = __SWR | __SSTR; + f._bf._base = f._p = (unsigned char *) str; + f._bf._size = f._w = INT_MAX; + f._data = _REENT; +#ifdef _HAVE_STDC + va_start (ap, fmt); +#else + va_start (ap); +#endif + ret = vfiprintf (&f, fmt, ap); + va_end (ap); + *f._p = 0; + return (ret); +} |