From 239c15845aaaec72b10603cf0f0039696ba40125 Mon Sep 17 00:00:00 2001
From: jules <jules@rawmaterialsoftware.com>
Date: Mon, 23 Sep 2013 11:17:43 +0100
Subject: [PATCH] New method: FloatVectorOperations::enableFlushToZeroMode()

---
 .../buffers/juce_FloatVectorOperations.cpp               | 9 +++++++++
 .../buffers/juce_FloatVectorOperations.h                 | 5 +++++
 2 files changed, 14 insertions(+)

diff --git a/modules/juce_audio_basics/buffers/juce_FloatVectorOperations.cpp b/modules/juce_audio_basics/buffers/juce_FloatVectorOperations.cpp
index 53dd00b55d..abf1d8f0d6 100644
--- a/modules/juce_audio_basics/buffers/juce_FloatVectorOperations.cpp
+++ b/modules/juce_audio_basics/buffers/juce_FloatVectorOperations.cpp
@@ -332,3 +332,12 @@ float JUCE_CALLTYPE FloatVectorOperations::findMaximum (const float* src, int nu
     return juce::findMaximum (src, num);
    #endif
 }
+
+void JUCE_CALLTYPE FloatVectorOperations::enableFlushToZeroMode (bool shouldEnable) noexcept
+{
+   #if JUCE_USE_SSE_INTRINSICS
+    if (FloatVectorHelpers::isSSE2Available())
+        _MM_SET_FLUSH_ZERO_MODE (shouldEnable ? _MM_FLUSH_ZERO_ON : _MM_FLUSH_ZERO_OFF);
+   #endif
+    (void) shouldEnable;
+}
diff --git a/modules/juce_audio_basics/buffers/juce_FloatVectorOperations.h b/modules/juce_audio_basics/buffers/juce_FloatVectorOperations.h
index 79b54b0205..a021eebf91 100644
--- a/modules/juce_audio_basics/buffers/juce_FloatVectorOperations.h
+++ b/modules/juce_audio_basics/buffers/juce_FloatVectorOperations.h
@@ -73,6 +73,11 @@ public:
 
     /** Finds the maximum value in the given array. */
     static float JUCE_CALLTYPE findMaximum (const float* src, int numValues) noexcept;
+
+    /** On Intel CPUs, this method enables or disables the SSE flush-to-zero mode.
+        Effectively, this is a wrapper around a call to _MM_SET_FLUSH_ZERO_MODE
+    */
+    static void JUCE_CALLTYPE enableFlushToZeroMode (bool shouldEnable) noexcept;
 };