Add fmt_scaled util function

diff --git a/util.c b/util.c
index 08f14ff..a7576b4 100644 (file)
--- a/util.c
+++ b/util.c
@@ -65,6 +65,22 @@ bprintf(const char *fmt, ...)
        return buf;
 }
 
        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, ...)
 {
 int
 pscanf(const char *path, const char *fmt, ...)
 {

diff --git a/util.h b/util.h
index a73b103..bd05574 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, ...);
 void die(const char *, ...);
 
 const char *bprintf(const char *fmt, ...);

+const char *fmt_scaled(size_t);

 int pscanf(const char *path, const char *fmt, ...);
 int pscanf(const char *path, const char *fmt, ...);