Mesa (master): intel/isl: Add an isl_assert_div helper

[Jason Ekstrand]

Module: Mesa
Branch: master
Commit: 1547d133ac93292a9f57641aea5c7a7672a4a308
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=1547d133ac93292a9f57641aea5c7a7672a4a308

Author: Jason Ekstrand <jason.ekstrand at intel.com>
Date:   Tue May 30 08:18:57 2017 -0700

intel/isl: Add an isl_assert_div helper

This is a fairly common operation and it's nice to be able to just call
the one little function.

Reviewed-by: Topi Pohjolainen <topi.pohjolainen at intel.com>

---

 src/intel/isl/isl_priv.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/intel/isl/isl_priv.h b/src/intel/isl/isl_priv.h
index 3c4cc1ed95..186e84db46 100644
--- a/src/intel/isl/isl_priv.h
+++ b/src/intel/isl/isl_priv.h
@@ -80,6 +80,13 @@ isl_align_npot(uintmax_t n, uintmax_t a)
    return ((n + a - 1) / a) * a;
 }
 
+static inline uintmax_t
+isl_assert_div(uintmax_t n, uintmax_t a)
+{
+   assert(n % a == 0);
+   return n / a;
+}
+
 /**
  * Alignment must be a power of 2.
  */