Index: fusl/src/ctype/iswprint.c |
diff --git a/fusl/src/ctype/iswprint.c b/fusl/src/ctype/iswprint.c |
new file mode 100644 |
index 0000000000000000000000000000000000000000..69856e0d8e3a3e98dec528bae17cd7da8456704b |
--- /dev/null |
+++ b/fusl/src/ctype/iswprint.c |
@@ -0,0 +1,27 @@ |
+#include <wctype.h> |
+#include "libc.h" |
+ |
+/* Consider all legal codepoints as printable except for: |
+ * - C0 and C1 control characters |
+ * - U+2028 and U+2029 (line/para break) |
+ * - U+FFF9 through U+FFFB (interlinear annotation controls) |
+ * The following code is optimized heavily to make hot paths for the |
+ * expected printable characters. */ |
+ |
+int iswprint(wint_t wc) |
+{ |
+ if (wc < 0xffU) |
+ return (wc+1 & 0x7f) >= 0x21; |
+ if (wc < 0x2028U || wc-0x202aU < 0xd800-0x202a || wc-0xe000U < 0xfff9-0xe000) |
+ return 1; |
+ if (wc-0xfffcU > 0x10ffff-0xfffc || (wc&0xfffe)==0xfffe) |
+ return 0; |
+ return 1; |
+} |
+ |
+int __iswprint_l(wint_t c, locale_t l) |
+{ |
+ return iswprint(c); |
+} |
+ |
+weak_alias(__iswprint_l, iswprint_l); |