analog: Implement multiplication for sr_rational

[libsigrok.git] / include / libsigrok / proto.h

diff --git a/include/libsigrok/proto.h b/include/libsigrok/proto.h
index 0dd594ed49821aab7c0996c503aeec3de638e5e0..bd7250571cb9c75143c59fa215b3d9fa7b5136b8 100644 (file)
--- a/include/libsigrok/proto.h
+++ b/include/libsigrok/proto.h
@@ -34,6 +34,8 @@ SR_API int sr_analog_unit_to_string(const struct sr_datafeed_analog *analog,
                char **result);
 SR_API void sr_rational_set(struct sr_rational *r, int64_t p, uint64_t q);
 SR_API int sr_rational_eq(const struct sr_rational *a, const struct sr_rational *b);
+SR_API int sr_rational_mult(struct sr_rational *res, const struct sr_rational *a,
+               const struct sr_rational *b);
 
 /*--- backend.c -------------------------------------------------------------*/