isAscii: avoid dependency on _GNU_SOURCE

facchinm · facchinm · commit 1171abba2c31 · 2022-12-20T17:27:58.000+01:00
Fixes arduino#158 Thanks to @kenny5660 for the one liner
diff --git a/api/WCharacter.h b/api/WCharacter.h
@@ -63,7 +63,7 @@ inline bool isAlpha(int c)
 // that fits into the ASCII character set.
 inline bool isAscii(int c)
 {
-  return ( isascii (c) == 0 ? false : true);
+  return ((c & ~0x7f) != 0 ? false : true );
 }
 
 

Original file line number	Diff line number	Diff line change
`@@ -63,7 +63,7 @@ inline bool isAlpha(int c)`
`63`	`63`	`// that fits into the ASCII character set.`
`64`	`64`	`inline bool isAscii(int c)`
`65`	`65`	`{`
`66`		`- return ( isascii (c) == 0 ? false : true);`
	`66`	`+ return ((c & ~0x7f) != 0 ? false : true );`
`67`	`67`	`}`
`68`	`68`
`69`	`69`