diff options
| -rw-r--r-- | src/base/bitfield.hh | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/base/bitfield.hh b/src/base/bitfield.hh index ec1ffce50..59b239a88 100644 --- a/src/base/bitfield.hh +++ b/src/base/bitfield.hh @@ -1,5 +1,5 @@ /* - * Copyright (c) 2017 ARM Limited + * Copyright (c) 2017, 2019 ARM Limited * All rights reserved * * The license below extends only to copyright in the software and shall @@ -293,4 +293,15 @@ inline int ctz32(uint32_t value) return value ? __builtin_ctz(value) : 32; } +/** + * Count trailing zeros in a 64-bit value. + * + * @param An input value + * @return The number of trailing zeros or 64 if the value is zero. + */ +inline int ctz64(uint64_t value) +{ + return value ? __builtin_ctzll(value) : 64; +} + #endif // __BASE_BITFIELD_HH__ |