X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fanalog.c;h=10c4c1c7ac25ff145dbab628d14135e2a33753a2;hb=81b3ce374c3b6d48e5ed321ac7a871ce4248a0bb;hp=fba7830f22972151f4f616f4dcea81e9e8ae05f8;hpb=a24da9a81358644265465325d12579cd8aa34ba5;p=libsigrok.git

diff --git a/src/analog.c b/src/analog.c
index fba7830f..10c4c1c7 100644
--- a/src/analog.c
+++ b/src/analog.c
@@ -24,7 +24,23 @@
 #include "libsigrok.h"
 #include "libsigrok-internal.h"
 
+/** @cond PRIVATE */
 #define LOG_PREFIX "analog"
+/** @endcond */
+
+/**
+ * @file
+ *
+ * Handling and converting analog data.
+ */
+
+/**
+ * @defgroup grp_analog Analog data handling
+ *
+ * Handling and converting analog data.
+ *
+ * @{
+ */
 
 struct unit_mq_string {
 	uint64_t value;
@@ -180,11 +196,11 @@ SR_API int sr_analog_float_to_string(float value, int digits, char **result)
 
 	/* This produces at least one too many digits */
 	*result = g_strdup_printf("%.*f", digits, value);
-	for (i = 0, cnt = 0; *result[i]; i++) {
-		if (isdigit(*result[i++]))
+	for (i = 0, cnt = 0; (*result)[i]; i++) {
+		if (isdigit((*result)[i++]))
 			cnt++;
 		if (cnt == digits) {
-			*result[i] = 0;
+			(*result)[i] = 0;
 			break;
 		}
 	}
@@ -229,3 +245,16 @@ SR_API int sr_analog_unit_to_string(const struct sr_datafeed_analog2 *analog,
 	return SR_OK;
 }
 
+/*
+ * Set sr_rational r to the given value.
+ *
+ * @param p Numerator
+ * @param q Denominator
+ */
+SR_API void sr_rational_set(struct sr_rational *r, uint64_t p, uint64_t q)
+{
+	r->p = p;
+	r->q = q;
+}
+
+/** @} */