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add function `char-alphabetic?`

This commit is contained in:
Jeff Bezanson 2017-08-19 14:19:23 -04:00
parent b2d6548715
commit 74d4de6ad5
1 changed files with 10 additions and 0 deletions
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10
string.c
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@ -242,6 +242,15 @@ value_t fl_char_downcase(value_t *args, u_int32_t nargs)
return mk_wchar(towlower(*(int32_t*)cp_data(cp)));
}
value_t fl_char_alpha(value_t *args, u_int32_t nargs)
{
argcount("char-alphabetic?", nargs, 1);
cprim_t *cp = (cprim_t*)ptr(args[0]);
if (!iscprim(args[0]) || cp_class(cp) != wchartype)
type_error("char-alphabetic?", "wchar", args[0]);
return iswalpha(*(int32_t*)cp_data(cp)) ? FL_T : FL_F;
}
static value_t mem_find_byte(char *s, char c, size_t start, size_t len)
{
char *p = memchr(s+start, c, len-start);
@ -412,6 +421,7 @@ static builtinspec_t stringfunc_info[] = {
{ "char.upcase", fl_char_upcase },
{ "char.downcase", fl_char_downcase },
{ "char-alphabetic?", fl_char_alpha },
{ "number->string", fl_numbertostring },
{ "string->number", fl_stringtonumber },