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 e6590441369365cc127092e48c8267fbf211adf5..b8a654a8ad0dde97e863922466083b1fe24e59e8 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 d0b6bc60d96a9c7b0dd9b582d1198b1a3400130d..342cf2b21269bf3b3b0cde9cfc0795b7d5440136 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);