39 lines
711 B
C
39 lines
711 B
C
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#include <blue/core/misc.h>
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#define LENGTH_RET(v, boundary, len) \
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if ((v) < (boundary)) \
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return (len);
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size_t b_int_length(intptr_t v)
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{
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size_t len = 0;
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if (v < 0) {
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v *= -1;
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len++;
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}
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return len + b_uint_length(v);
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}
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size_t b_uint_length(uintptr_t v)
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{
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LENGTH_RET(v, 10, 1);
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LENGTH_RET(v, 100, 2);
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LENGTH_RET(v, 1000, 3);
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LENGTH_RET(v, 10000, 4);
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LENGTH_RET(v, 100000, 5);
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LENGTH_RET(v, 1000000, 6);
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LENGTH_RET(v, 10000000, 7);
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LENGTH_RET(v, 100000000, 8);
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LENGTH_RET(v, 1000000000, 9);
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LENGTH_RET(v, 10000000000, 10);
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size_t len = 0;
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while (v > 0) {
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v /= 10;
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len++;
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}
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return len;
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}
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