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-rw-r--r--reftable/basics.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/reftable/basics.h b/reftable/basics.h
index 91f3533efe..523ecd5307 100644
--- a/reftable/basics.h
+++ b/reftable/basics.h
@@ -22,13 +22,14 @@ uint32_t get_be24(uint8_t *in);
void put_be16(uint8_t *out, uint16_t i);
/*
- * find smallest index i in [0, sz) at which f(i) is true, assuming
- * that f is ascending. Return sz if f(i) is false for all indices.
+ * find smallest index i in [0, sz) at which `f(i) > 0`, assuming that f is
+ * ascending. Return sz if `f(i) == 0` for all indices. The search is aborted
+ * and `sz` is returned in case `f(i) < 0`.
*
* Contrary to bsearch(3), this returns something useful if the argument is not
* found.
*/
-int binsearch(size_t sz, int (*f)(size_t k, void *args), void *args);
+size_t binsearch(size_t sz, int (*f)(size_t k, void *args), void *args);
/*
* Frees a NULL terminated array of malloced strings. The array itself is also