From: Vincent Fu <vincent.fu@wdc.com>
Date: Wed, 16 Oct 2019 16:32:42 +0000 (-0400)
Subject: t/iee754: add return value
X-Git-Tag: fio-3.17~22^2~11
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=1c75cb5febdfdea9f9b6999e222859fcf2c2e801;p=fio.git

t/iee754: add return value

To facilitate automated testing, return 0 when all tests succeed and a
non-zero value otherwise.

Also add one more test value.
---

diff --git a/t/ieee754.c b/t/ieee754.c
index 3898ab74..b6526394 100644
--- a/t/ieee754.c
+++ b/t/ieee754.c
@@ -1,21 +1,26 @@
 #include <stdio.h>
 #include "../lib/ieee754.h"
 
-static double values[] = { -17.23, 17.23, 123.4567, 98765.4321, 0.0 };
+static double values[] = { -17.23, 17.23, 123.4567, 98765.4321,
+	3.14159265358979323, 0.0 };
 
 int main(int argc, char *argv[])
 {
 	uint64_t i;
-	double f;
-	int j;
+	double f, delta;
+	int j, differences = 0;
 
 	j = 0;
 	do {
 		i = fio_double_to_uint64(values[j]);
 		f = fio_uint64_to_double(i);
-		printf("%f -> %f\n", values[j], f);
+		delta = values[j] - f;
+		printf("%26.20lf -> %26.20lf, delta = %26.20lf\n", values[j],
+			f, delta);
+		if (f != values[j])
+			differences++;
 		j++;
 	} while (values[j] != 0.0);
 
-	return 0;
+	return differences;
 }