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#include <ctype.h>
/** test whether a character is in the ASCII range **/
int isascii(int c)
{
if (0 <= c && c <= 0177) {
return 1;
}
return 0;
}
/***
The fn(isascii) function tests whether arg(c) is a 7-bit US-ASCII character.
***/
/* RETURN(NZ): arg(c) is between 0 and octal 0177 inclusive */
/* RETURN(0): arg(c) is outside of the ASCII range */
/* UNDEFINED: - */
/* UNSPECIFIED: - */
/* IMPLEMENTATION: - */
/* LOCALE: - */
/*
XOPEN(4)
*/
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