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-rw-r--r--src/gallium/auxiliary/util/u_math.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h
index ca6d0f1dfc8..8eb840f1ec0 100644
--- a/src/gallium/auxiliary/util/u_math.h
+++ b/src/gallium/auxiliary/util/u_math.h
@@ -583,6 +583,13 @@ u_bit_scan(unsigned *mask)
return i;
}
+static INLINE int
+u_bit_scan64(uint64_t *mask)
+{
+ int i = ffsll(*mask) - 1;
+ *mask &= ~(1llu << i);
+ return i;
+}
/**
* Return float bits.