4 files changed, 12 insertions, 9 deletions

diff --git a/src/systemcmds/tests/test_conv.cpp b/src/systemcmds/tests/test_conv.cpp
index 0ecdc8eb9..fda949c61 100644
--- a/src/systemcmds/tests/test_conv.cpp
+++ b/src/systemcmds/tests/test_conv.cpp
@@ -65,7 +65,7 @@ int test_conv(int argc, char *argv[])
 		float f = i/10000.0f;
 		float fres = REG_TO_FLOAT(FLOAT_TO_REG(f));
 		if (fabsf(f - fres) > 0.0001f) {
-			warnx("conversion fail: input: %8.4f, intermediate: %d, result: %8.4f", f, REG_TO_SIGNED(FLOAT_TO_REG(f)), (double)fres);
+			warnx("conversion fail: input: %8.4f, intermediate: %d, result: %8.4f", (double)f, REG_TO_SIGNED(FLOAT_TO_REG(f)), (double)fres);
 			return 1;
 		}
 	}
diff --git a/src/systemcmds/tests/test_file.c b/src/systemcmds/tests/test_file.c
index 86f23b485..570583dee 100644
--- a/src/systemcmds/tests/test_file.c
+++ b/src/systemcmds/tests/test_file.c
@@ -149,6 +149,8 @@ test_file(int argc, char *argv[])
 			}
 			end = hrt_absolute_time();
 
+			warnx("write took %llu us", (end - start));
+
 			close(fd);
 			fd = open("/fs/microsd/testfile", O_RDONLY);
 
@@ -192,7 +194,6 @@ test_file(int argc, char *argv[])
 
 			warnx("testing aligned writes - please wait.. (CTRL^C to abort)");
 
-			start = hrt_absolute_time();
 			for (unsigned i = 0; i < iterations; i++) {
 				int wret = write(fd, write_buf, chunk_sizes[c]);
 
diff --git a/src/systemcmds/tests/test_float.c b/src/systemcmds/tests/test_float.c
index e33cc6ef7..bb8b6c7f5 100644
--- a/src/systemcmds/tests/test_float.c
+++ b/src/systemcmds/tests/test_float.c
@@ -68,7 +68,7 @@ int test_float(int argc, char *argv[])
 	float sinf_one = sinf(1.0f);
 	float sqrt_two = sqrt(2.0f);
 
-	if (sinf_zero == 0.0f) {
+	if (fabsf(sinf_zero) < FLT_EPSILON) {
 		printf("\t success: sinf(0.0f) == 0.0f\n");
 
 	} else {
@@ -136,7 +136,7 @@ int test_float(int argc, char *argv[])
 		ret = -2;
 	}
 
-	if (sqrt_two == 1.41421356f) {
+	if (fabsf(sqrt_two - 1.41421356f) < FLT_EPSILON) {
 		printf("\t success: sqrt(2.0f) == 1.41421f\n");
 
 	} else {
@@ -188,7 +188,7 @@ int test_float(int argc, char *argv[])
 
 	double d1d2 = d1 * d2;
 
-	if (d1d2 == 2.022200000000000219557705349871) {
+	if (fabs(d1d2 - 2.022200000000000219557705349871) < DBL_EPSILON) {
 		printf("\t success: 1.0111 * 2.0 == 2.0222\n");
 
 	} else {
@@ -201,7 +201,7 @@ int test_float(int argc, char *argv[])
 	// Assign value of f1 to d1
 	d1 = f1;
 
-	if (f1 == (float)d1) {
+	if (fabsf(f1 - (float)d1) < FLT_EPSILON) {
 		printf("\t success: (float) 1.55f == 1.55 (double)\n");
 
 	} else {
@@ -216,7 +216,7 @@ int test_float(int argc, char *argv[])
 	double sin_one = sin(1.0);
 	double atan2_ones = atan2(1.0, 1.0);
 
-	if (sin_zero == 0.0) {
+	if (fabs(sin_zero - 0.0) < DBL_EPSILON) {
 		printf("\t success: sin(0.0) == 0.0\n");
 
 	} else {
@@ -224,7 +224,7 @@ int test_float(int argc, char *argv[])
 		ret = -9;
 	}
 
-	if (sin_one == 0.841470984807896504875657228695) {
+	if (fabs(sin_one - 0.841470984807896504875657228695) < DBL_EPSILON) {
 		printf("\t success: sin(1.0) == 0.84147098480\n");
 
 	} else {
@@ -232,7 +232,7 @@ int test_float(int argc, char *argv[])
 		ret = -10;
 	}
 
-	if (atan2_ones != 0.785398) {
+	if (fabs(atan2_ones - 0.785398) < DBL_EPSILON) {
 		printf("\t success: atan2(1.0, 1.0) == 0.785398\n");
 
 	} else {
diff --git a/src/systemcmds/tests/test_mtd.c b/src/systemcmds/tests/test_mtd.c
index cdb4362ba..43231ccad 100644
--- a/src/systemcmds/tests/test_mtd.c
+++ b/src/systemcmds/tests/test_mtd.c
@@ -171,6 +171,8 @@ test_mtd(int argc, char *argv[])
 		}
 		end = hrt_absolute_time();
 
+		warnx("write took %llu us", (end - start));
+
 		close(fd);
 		fd = open(PARAM_FILE_NAME, O_RDONLY);