1 files changed, 29 insertions, 1 deletions
diff --git a/src/stdlib/strtod.c b/src/stdlib/strtod.c
index 388058fe..ecfabdf1 100644
--- a/src/stdlib/strtod.c
+++ b/src/stdlib/strtod.c
@@ -1,6 +1,34 @@
 #include <stdlib.h>
+#include "shgetc.h"
+#include "floatscan.h"
+#include "stdio_impl.h"
+
+static long double strtox(const char *s, char **p, int prec)
+{
+	char *t = (char *)s;
+	while (isspace(*t)) t++;
+	FILE f = {
+		.buf = (void *)t, .rpos = (void *)t,
+		.rend = (void *)-1, .lock = -1
+	};
+	shlim(&f, 0);
+	long double y = __floatscan(&f, -1, prec, 1);
+	off_t cnt = shcnt(&f);
+	if (p) *p = cnt ? t + cnt : (char *)s;
+	return y;
+}
+
+float strtof(const char *s, char **p)
+{
+	return strtox(s, p, 0);
+}
 
 double strtod(const char *s, char **p)
 {
-	return strtold(s, p);
+	return strtox(s, p, 1);
+}
+
+long double strtold(const char *s, char **p)
+{
+	return strtox(s, p, 2);
 }