X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fstrutil.c;h=28f202c9801547e2716d332cf56f7f67c75396c2;hb=42408643f9dcb80d1744aaa4d08e0170594daad1;hp=5f48e87bebc02cd2f0eaca8c516aba7b6349e5a1;hpb=21ef355e503278a3d2a215c87b0d48112276330a;p=libsigrok.git

diff --git a/src/strutil.c b/src/strutil.c
index 5f48e87b..28f202c9 100644
--- a/src/strutil.c
+++ b/src/strutil.c
@@ -621,20 +621,31 @@ SR_API int sr_parse_rational(const char *str, struct sr_rational *ret)
 
 	if (str == endptr && (str[0] == '-' || str[0] == '+') && str[1] == '.')
 		endptr += 1;
+	else if (str == endptr && str[0] == '.')
+		/* EMPTY */;
 	else if (errno)
 		return SR_ERR;
 
 	if (integral < 0 || str[0] == '-')
 		is_negative = true;
 
+	errno = 0;
 	if (*endptr == '.') {
-		const char* start = endptr + 1;
+		bool is_exp, is_eos;
+		const char *start = endptr + 1;
 		fractional = g_ascii_strtoll(start, &endptr, 10);
+		is_exp = *endptr == 'E' || *endptr == 'e';
+		is_eos = *endptr == '\0';
+		if (endptr == start && (is_exp || is_eos)) {
+			fractional = 0;
+			errno = 0;
+		}
 		if (errno)
 			return SR_ERR;
 		fractional_len = endptr - start;
 	}
 
+	errno = 0;
 	if ((*endptr == 'E') || (*endptr == 'e')) {
 		exponent = g_ascii_strtoll(endptr + 1, &endptr, 10);
 		if (errno)