strmhz(): Round numbers when printing clock frequencies

Round clock frequencies for printing.

Many boards printed off clock frequencies like 399 MHz instead of the
exact 400 MHz because numberes were not rounded. This is fixed now.

Signed-off-by: Wolfgang Denk <wd@denx.de>

diff --git a/include/common.h b/include/common.h
index e659044..b8a654a 100644 (file)
--- a/include/common.h
+++ b/include/common.h
@@ -692,8 +692,9 @@ void __attribute__((weak)) show_boot_progress (int val);
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 
-#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
-#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
+#define DIV_ROUND(n,d)         (((n) + ((d)/2)) / (d))
+#define DIV_ROUND_UP(n,d)      (((n) + (d) - 1) / (d))
+#define roundup(x, y)          ((((x) + ((y) - 1)) / (y)) * (y))
 
 #define ALIGN(x,a)             __ALIGN_MASK((x),(typeof(x))(a)-1)
 #define __ALIGN_MASK(x,mask)   (((x)+(mask))&~(mask))

diff --git a/lib_generic/strmhz.c b/lib_generic/strmhz.c
index d0b6bc6..342cf2b 100644 (file)
--- a/lib_generic/strmhz.c
+++ b/lib_generic/strmhz.c
@@ -27,9 +27,11 @@ char *strmhz (char *buf, long hz)
        long l, n;
        long m;
 
-       n = hz / 1000000L;
+       n = DIV_ROUND(hz, 1000000L);
        l = sprintf (buf, "%ld", n);
-       m = (hz % 1000000L) / 1000L;
+
+       hz -= n * 1000000L;
+       m = DIV_ROUND(hz, 1000L);
        if (m != 0)
                sprintf (buf + l, ".%03ld", m);
        return (buf);