X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=include%2Flibsigrok%2Flibsigrok.h;h=e132012470b703d6f7402580016f911254683fe1;hb=6c23b710ec21b6937be059aa7cb14313e929ec7c;hp=511ab28c0f074ce25afb5fe121ed038dda9298e6;hpb=9ea62f2e0ac1ae9ee01215148177ae4e6f344078;p=libsigrok.git

diff --git a/include/libsigrok/libsigrok.h b/include/libsigrok/libsigrok.h
index 511ab28c..e1320124 100644
--- a/include/libsigrok/libsigrok.h
+++ b/include/libsigrok/libsigrok.h
@@ -263,7 +263,7 @@ enum sr_unit {
 	SR_UNIT_SIEMENS,
 	/**
 	 * An absolute measurement of power, in decibels, referenced to
-	 * 1 milliwatt (dBu).
+	 * 1 milliwatt (dBm).
 	 */
 	SR_UNIT_DECIBEL_MW,
 	/** Voltage in decibel, referenced to 1 volt (dBV). */
@@ -508,7 +508,12 @@ struct sr_analog_encoding {
 	gboolean is_signed;
 	gboolean is_float;
 	gboolean is_bigendian;
-	uint8_t digits;
+	/**
+	 * Number of significant digits after the decimal point if positive,
+	 * or number of non-significant digits before the decimal point if
+	 * negative (refers to the value we actually read on the wire).
+	 */
+	int8_t digits;
 	gboolean is_digits_decimal;
 	struct sr_rational scale;
 	struct sr_rational offset;
@@ -522,7 +527,13 @@ struct sr_analog_meaning {
 };
 
 struct sr_analog_spec {
-	uint8_t spec_digits;
+	/**
+ 	 * Number of significant digits after the decimal point if positive,
+	 * or number of non-significant digits before the decimal point if
+	 * negative (refers to vendor specifications/datasheet or actual
+	 * device display).
+	 */
+	int8_t spec_digits;
 };
 
 /** Generic option struct used by various subsystems. */