42 lines
647 B
C++
42 lines
647 B
C++
#include "defs.h"
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#include "io.h"
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#include <string.h>
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static constexpr size_t nbuflen = 11;
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void
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write_num(IO *interface, KF_INT n)
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{
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// TODO(kyle): make the size of the buffer depend on the size of
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// KF_INT.
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char buf[nbuflen];
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uint8_t i = nbuflen;
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memset(buf, 0, i);
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bool neg = n < 0;
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if (n < 0) {
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interface->wrch('-');
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n = ~n;
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if (n == 0) {
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neg = false;
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n++;
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}
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}
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else if (n == 0) {
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interface->wrch('0');
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return;
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}
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while (n != 0) {
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char ch = (n % 10) + '0';
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if (neg && (i == nbuflen)) ch++;
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buf[i-1] = ch;
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i--;
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n /= 10;
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}
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uint8_t buflen = nbuflen - i % nbuflen;
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interface->wrbuf(buf+i, buflen);
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} |