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authorPaul Jungeblut <s_jungeb@i08pc54.atis-stud.uni-karlsruhe.de>2014-11-25 17:08:35 +0100
committerPaul Jungeblut <s_jungeb@i08pc54.atis-stud.uni-karlsruhe.de>2014-11-25 17:08:35 +0100
commit24a946fdaeb0e5ceabf458007128df4fd4872733 (patch)
treeed55b8ae16442411724672df3c32a341b203a07d /sonstiges/bitOps.cpp
parent6c52da34e58b900b574b4a420f41dae44700b7b8 (diff)
parent083aca7f730fec966e384f80a902b062f4c3b799 (diff)
Merge branch 'master' of https://github.com/pjungeblut/ChaosKITs
merge# Bitte geben Sie eine Commit-Beschreibung ein um zu erklären, warum dieser
Diffstat (limited to 'sonstiges/bitOps.cpp')
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1 files changed, 22 insertions, 0 deletions
diff --git a/sonstiges/bitOps.cpp b/sonstiges/bitOps.cpp
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+[lsb: 0-th bit, msb: n-th bit,]
+
+Get j-th bit:
+(a & (1 << j)) != 0
+
+Set j-th bit:
+a |= (1 << j)
+
+Clear j-th bit:
+a &= ~(1 << j)
+
+Toggle j-th bit:
+a ^= (1 << j)
+
+Get value of first set bit:
+(a & -a)
+
+Turn on all bits:
+a = -1
+
+Turn on first n bits:
+a = (1 << n) - 1