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bdk: sprintf: add negative number support for %d
This will now force a number as negative if bit31 is set and properly create the relevant string. That means that external handling in order to show sign is now not needed.
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1 changed files with 13 additions and 1 deletions
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@ -40,10 +40,19 @@ static void _s_putn(u32 v, int base, char fill, int fcnt)
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static const char digits[] = "0123456789ABCDEFghijklmnopqrstuvwxyz";
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char *p;
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int c = fcnt;
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bool negative = false;
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if (base > 36)
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return;
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// Account for negative numbers.
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if (base == 10 && v & 0x80000000)
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{
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negative = true;
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v = (int)v * -1;
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c--;
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}
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p = buf + 64;
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*p = 0;
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do
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@ -53,9 +62,12 @@ static void _s_putn(u32 v, int base, char fill, int fcnt)
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v /= base;
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} while (v);
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if (negative)
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*--p = '-';
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if (fill != 0)
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{
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while (c > 0)
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while (c > 0 && p > buf)
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{
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*--p = fill;
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c--;
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