binarybuffer: move variables to point of first use

[openocd.git] / src / helper / binarybuffer.c

diff --git a/src/helper/binarybuffer.c b/src/helper/binarybuffer.c
index d813ecf537e551c794abd8ed73a97ae85fbbb0df..95e084efa41da465bc8d0d1d855484d4de834f54 100644 (file)
--- a/src/helper/binarybuffer.c
+++ b/src/helper/binarybuffer.c
@@ -50,13 +50,10 @@ const unsigned char bit_reverse_table256[] =
 
 uint8_t* buf_cpy(const uint8_t *from, uint8_t *to, int size)
 {
-       unsigned int num_bytes = CEIL(size, 8);
-       unsigned int i;
-
        if (from == NULL)
                return NULL;
 
-       for (i = 0; i < num_bytes; i++)
+       for (unsigned i = 0, num_bytes = CEIL(size, 8); i < num_bytes; i++)
                to[i] = from[i];
 
        /* mask out bits that don't belong to the buffer */
@@ -70,13 +67,10 @@ uint8_t* buf_cpy(const uint8_t *from, uint8_t *to, int size)
 
 int buf_cmp(const uint8_t *buf1, const uint8_t *buf2, int size)
 {
-       int num_bytes = CEIL(size, 8);
-       int i;
-
        if (!buf1 || !buf2)
                return 1;
 
-       for (i = 0; i < num_bytes; i++)
+       for (unsigned i = 0, num_bytes = CEIL(size, 8); i < num_bytes; i++)
        {
                /* last byte */
                /* mask out bits that don't really belong to the buffer if size isn't a multiple of 8 bits */
@@ -97,10 +91,7 @@ int buf_cmp(const uint8_t *buf1, const uint8_t *buf2, int size)
 
 int buf_cmp_mask(const uint8_t *buf1, const uint8_t *buf2, const uint8_t *mask, int size)
 {
-       int num_bytes = CEIL(size, 8);
-       int i;
-
-       for (i = 0; i < num_bytes; i++)
+       for (unsigned i = 0, num_bytes = CEIL(size, 8); i < num_bytes; i++)
        {
                /* last byte */
                /* mask out bits that don't really belong to the buffer if size isn't a multiple of 8 bits */
@@ -122,10 +113,7 @@ int buf_cmp_mask(const uint8_t *buf1, const uint8_t *buf2, const uint8_t *mask,
 
 uint8_t* buf_set_ones(uint8_t *buf, int count)
 {
-       int num_bytes = CEIL(count, 8);
-       int i;
-
-       for (i = 0; i < num_bytes; i++)
+       for (unsigned i = 0, num_bytes = CEIL(count, 8); i < num_bytes; i++)
        {
                if (count >= 8)
                        buf[i] = 0xff;
@@ -141,9 +129,8 @@ uint8_t* buf_set_ones(uint8_t *buf, int count)
 uint8_t* buf_set_buf(const uint8_t *src, int src_start, uint8_t *dst, int dst_start, int len)
 {
        int src_idx = src_start, dst_idx = dst_start;
-       int i;
 
-       for (i = 0; i < len; i++)
+       for (int i = 0; i < len; i++)
        {
                if (((src[src_idx / 8] >> (src_idx % 8)) & 1) == 1)
                        dst[dst_idx / 8] |= 1 << (dst_idx % 8);
@@ -158,9 +145,7 @@ uint8_t* buf_set_buf(const uint8_t *src, int src_start, uint8_t *dst, int dst_st
 
 uint32_t flip_u32(uint32_t value, unsigned int num)
 {
-       uint32_t c;
-
-       c = (bit_reverse_table256[value & 0xff] << 24) |
+       uint32_t c = (bit_reverse_table256[value & 0xff] << 24) |
                (bit_reverse_table256[(value >> 8) & 0xff] << 16) |
                (bit_reverse_table256[(value >> 16) & 0xff] << 8) |
                (bit_reverse_table256[(value >> 24) & 0xff]);
@@ -173,12 +158,10 @@ uint32_t flip_u32(uint32_t value, unsigned int num)
 
 int ceil_f_to_u32(float x)
 {
-       uint32_t y;
-
        if (x < 0)      /* return zero for negative numbers */
                return 0;
 
-       y = x;  /* cut off fraction */
+       uint32_t y = x; /* cut off fraction */
 
        if ((x - y) > 0.0) /* if there was a fractional part, increase by one */
                y++;