18 lines
460 B
C
18 lines
460 B
C
/* See LICENSE of license details. */
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#include <stdint.h>
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#include <unistd.h>
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void write_hex(int fd, unsigned long int hex) {
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uint8_t ii;
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uint8_t jj;
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char towrite;
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write(fd, "0x", 2);
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for (ii = sizeof(unsigned long int) * 2; ii > 0; ii--) {
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jj = ii - 1;
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uint8_t digit = ((hex & (0xF << (jj * 4))) >> (jj * 4));
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towrite = digit < 0xA ? ('0' + digit) : ('A' + (digit - 0xA));
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write(fd, &towrite, 1);
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}
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}
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