| #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); |
