util: Move util_is_power_of_two to bitscan.h and rename to util_is_power_of_two_or_zero

The new name make the zero-input behavior more obvious.  The next
patch adds a new function with different zero-input behavior.

Signed-off-by: Ian Romanick <[email protected]>
Suggested-by: Matt Turner <[email protected]>
Reviewed-by: Alejandro Piñeiro <[email protected]>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/util/u_vector.c b/src/util/u_vector.c
index 0de492ccf9a..bec6e5bbc30 100644
--- a/src/util/u_vector.c
+++ b/src/util/u_vector.c
@@ -37,8 +37,8 @@
 int
 u_vector_init(struct u_vector *vector, uint32_t element_size, uint32_t size)
 {
-   assert(util_is_power_of_two(size));
-   assert(element_size < size && util_is_power_of_two(element_size));
+   assert(util_is_power_of_two_or_zero(size));
+   assert(element_size < size && util_is_power_of_two_or_zero(element_size));
 
    vector->head = 0;
    vector->tail = 0;