X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=sidebyside;f=src%2Finternal%2Fintparse.c;h=90aa8339f1a35e48a0dfe55218aafa58a99746ad;hb=cf940165d4caf132405a3fe3df58b57eb735ac04;hp=fd403b589320633744d58fff0a17c3c7b366d9d4;hpb=47d027ee1a44829819c345287623fe75374893ab;p=musl

diff --git a/src/internal/intparse.c b/src/internal/intparse.c
index fd403b58..90aa8339 100644
--- a/src/internal/intparse.c
+++ b/src/internal/intparse.c
@@ -70,6 +70,8 @@ int __intparse(struct intparse *v, const void *buf, size_t n)
 			for (; n && *s-'0'<10U && v->small<=SLIM; n--, s++)
 				v->small = v->small * 10 + (*s-'0');
 		} else if ((b&-b) == b) {
+			/* Compute bitshift for power-of-two bases
+			 * using a De Bruijn B(2,3) sequence. */
 			int bs = "\0\1\2\4\7\3\6\5"[(0x17*b)>>5&7];
 			for (; n && (d=digits[*s])<b && v->small<=SLIM; n--, s++)
 				v->small = (v->small<<bs) + d;