Add fmt_scaled util function

diff --git a/util.c b/util.c
index 08f14ffb9315ab5b4e7ec9acc6982dc6d46af67d..a7576b4702583d508b604e7551f30961b2e02bd8 100644 (file)
--- a/util.c
+++ b/util.c
@@ -65,6 +65,22 @@ bprintf(const char *fmt, ...)
        return buf;
 }
 
+const char *
+fmt_scaled(size_t bytes)
+{
+       unsigned int i;
+       float scaled;
+       const char *units[] = { "B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB",
+                               "ZiB", "YiB" };
+
+       scaled = bytes;
+       for (i = 0; i < LEN(units) && scaled >= 1024; i++) {
+               scaled /= 1024.0;
+       }
+
+       return bprintf("%.1f%s", scaled, units[i]);
+}
+
 int
 pscanf(const char *path, const char *fmt, ...)
 {

diff --git a/util.h b/util.h
index a73b103181eeff7eb1b99ae825fe5b3d3ac0655f..bd05574b18108611ab446381ac8e761517f9698f 100644 (file)
--- a/util.h
+++ b/util.h
@@ -9,4 +9,5 @@ void warn(const char *, ...);
 void die(const char *, ...);
 
 const char *bprintf(const char *fmt, ...);
+const char *fmt_scaled(size_t);
 int pscanf(const char *path, const char *fmt, ...);