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eeshow/misc/util.h (sign1): return sign of argument, return 1 for 0
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@ -46,6 +46,7 @@
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#define swap(a, b) \
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({ typeof(a) _tmp = (a); a = (b); b = _tmp; })
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#define sign1(x) ((x) < 0 ? -1 : 1)
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#define unsupported(s) \
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fprintf(stderr, __FILE__ ":%d: unsupported: " s "\n", __LINE__)
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