From: Adrian Stratulat <redacted>
Date: Fri, 15 Jun 2018 13:39:15 +0000 (+0300)
Subject: dtm0660: Do not apply the exponent twice on the value
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=b8fcae5a128e2ca3143e05a799f80852ebd911b7;p=libsigrok.git

dtm0660: Do not apply the exponent twice on the value

This fixes bug #1236.
---

diff --git a/src/dmm/dtm0660.c b/src/dmm/dtm0660.c
index 86b6ccf7..42012399 100644
--- a/src/dmm/dtm0660.c
+++ b/src/dmm/dtm0660.c
@@ -254,6 +254,8 @@ static void parse_flags(const uint8_t *buf, struct dtm0660_info *info)
 static void handle_flags(struct sr_datafeed_analog *analog, float *floatval,
 			 int *exponent, const struct dtm0660_info *info)
 {
+	int initial_exponent = *exponent;
+
 	/* Factors */
 	if (info->is_nano)
 		*exponent -= 9;
@@ -265,7 +267,7 @@ static void handle_flags(struct sr_datafeed_analog *analog, float *floatval,
 		*exponent += 3;
 	if (info->is_mega)
 		*exponent += 6;
-	*floatval *= powf(10, *exponent);
+	*floatval *= powf(10, (*exponent - initial_exponent));
 
 	/* Measurement modes */
 	if (info->is_volt) {