From: Romain Forlot <romain.forlot@iot.bzh>
Date: Wed, 26 Apr 2017 22:44:17 +0000 (+0200)
Subject: Don't use heavy weapon to get some basic calculation
X-Git-Tag: 5.0.2~289
X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=commitdiff_plain;h=512336b68da052f167bdfb8f2b9a9992ed3f1688;p=apps%2Fagl-service-can-low-level.git

Don't use heavy weapon to get some basic calculation

Change-Id: Ibc820dea7efbc2d7a50671ce66804217c6707d56
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
---

diff --git a/CAN-binder/low-can-binding/can/can-bus-dev.cpp b/CAN-binder/low-can-binding/can/can-bus-dev.cpp
index 4737d113..7f7a7624 100644
--- a/CAN-binder/low-can-binding/can/can-bus-dev.cpp
+++ b/CAN-binder/low-can-binding/can/can-bus-dev.cpp
@@ -21,7 +21,6 @@
 #include <unistd.h>
 #include <linux/can/raw.h>
 #include <linux/can/bcm.h>
-#include <cmath>
 
 #include "can-bus.hpp"
 #include "can-message.hpp"
@@ -132,7 +131,7 @@ int can_bus_dev_t::create_rx_filter(const can_signal_t& s)
 	memset(&cfd, 0, sizeof(cfd));
 	memset(&bcm_msg.msg_head, 0, sizeof(bcm_msg.msg_head));
 	uint8_t bit_size = s.get_bit_size();
-	float val = (float)exp2(bit_size)-1;
+	float val = (float)(1 << bit_size)-1;
 
 	bcm_msg.msg_head.opcode  = RX_SETUP;
 	bcm_msg.msg_head.can_id  = can_id;