toascii, __toascii

Converts characters to 7-bit ASCII by truncation.

Syntax

int __toascii(
   int c
);
#define toascii __toascii

Parameters

c
Character to convert.

Return value

__toascii converts the value of c to the 7-bit ASCII range and returns the result. There's no return value reserved to indicate an error.

Remarks

The __toascii routine converts the given character to an ASCII character by truncating it to the low-order 7 bits. No other transformation is applied.

The __toascii routine is defined as a macro unless the preprocessor macro _CTYPE_DISABLE_MACROS is defined. For backward compatibility, toascii is defined as a macro only when __STDC__ isn't defined or is defined as 0; otherwise it's undefined.

Requirements

The toascii macro is a POSIX extension, and __toascii is a Microsoft-specific implementation of the POSIX extension. For more compatibility information, see Compatibility.

See also

Data conversion
is, isw routines
to functions