acos.s fix: use the formula acos(x) = atan2(sqrt(1-x),sqrt(1+x))
[musl] / src / ctype / iswalnum.c
1 #include <wchar.h>
2 #include <wctype.h>
3
4 #undef iswalnum
5
6 int iswalnum(wint_t wc)
7 {
8         return (unsigned)wc-'0' < 10 || iswalpha(wc);
9 }