Changeset 96780 in webkit for trunk/Source/JavaScriptCore/wtf

Timestamp:

Oct 5, 2011, 7:04:19 PM (14 years ago)

Author:

[email protected]

Message:

Define a log2f() function for Windows in wtf/MathExtras.h
​https://bugs.webkit.org/show_bug.cgi?id=69491

Reviewed by Darin Adler.

Source/JavaScriptCore:

• wtf/MathExtras.h:

(log2f):

Source/WebCore:

No new tests. This change is tested in existing layout tests.

• webaudio/AudioParamTimeline.cpp:

(WebCore::AudioParamTimeline::valuesForTimeRangeImpl):

File:

• trunk/Source/JavaScriptCore/wtf/MathExtras.h (modified) (1 diff)

trunk/Source/JavaScriptCore/wtf/MathExtras.h

@@ -150 +150 @@
 inline int isfinite(double x) { return _finite(x); }
 
-// MSVC's math.h does not currently supply log2.
+// MSVC's math.h does not currently supply log2 or log2f.
 inline double log2(double num)
 {
     // This constant is roughly M_LN2, which is not provided by default on Windows.
     return log(num) / 0.693147180559945309417232121458176568;
+}
+
+inline float log2f(float num)
+{
+    // This constant is roughly M_LN2, which is not provided by default on Windows.
+    return logf(num) / 0.693147180559945309417232121458176568f;
 }