[reactos] 05/218: [SDK/CRT] Provide inline implementation of log2

[Jérôme Gardou]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=86a0852ffb6576bae9dae…

commit 86a0852ffb6576bae9dae6ba4dcdb2abcd638f05
Author:     Jérôme Gardou <jerome.gardou(a)reactos.org>
AuthorDate: Mon Sep 21 16:54:39 2020 +0200
Commit:     Jérôme Gardou <jerome.gardou(a)reactos.org>
CommitDate: Thu Feb 4 16:37:01 2021 +0100

    [SDK/CRT] Provide inline implementation of log2
---
 sdk/include/crt/math.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sdk/include/crt/math.h b/sdk/include/crt/math.h
index b6ab12c8313..f565491ad6a 100644
--- a/sdk/include/crt/math.h
+++ b/sdk/include/crt/math.h
@@ -270,6 +270,7 @@ _Check_return_ __CRT_INLINE long lrintl(_In_ long double x) { return
(long)((x <
 _Check_return_ __CRT_INLINE long long llrint(_In_ double x) { return (long long)((x <
0) ? (x - 0.5f) : (x + 0.5)); }
 _Check_return_ __CRT_INLINE long long llrintf(_In_ float x) { return (long long)((x <
0) ? (x - 0.5f) : (x + 0.5)); }
 _Check_return_ __CRT_INLINE long long llrintl(_In_ long double x) { return (long long)((x
< 0) ? (x - 0.5f) : (x + 0.5)); }
+_Check_return_ __CRT_INLINE double log2(_In_ double x) { return log(x) / log(2); }
 
 #ifndef NO_OLDNAMES /* !__STDC__ */