Added a method FloatVectorOperations::negate().

modules/juce_audio_basics/buffers/juce_FloatVectorOperations.cpp

@@ -251,6 +251,15 @@ void JUCE_CALLTYPE FloatVectorOperations::multiply (float* dest, float multiplie
    #endif
 }
 
+void FloatVectorOperations::negate (float* dest, const float* src, int num) noexcept
+{
+   #if JUCE_USE_VDSP_FRAMEWORK
+    vDSP_vneg (src, 1, dest, 1, num);
+   #else
+    copyWithMultiply (dest, src, -1.0f, num);
+   #endif
+}
+
 void JUCE_CALLTYPE FloatVectorOperations::convertFixedToFloat (float* dest, const int* src, float multiplier, int num) noexcept
 {
    #if JUCE_USE_SSE_INTRINSICS

modules/juce_audio_basics/buffers/juce_FloatVectorOperations.h

@@ -62,6 +62,9 @@ public:
     /** Multiplies each of the destination values by a fixed multiplier. */
     static void JUCE_CALLTYPE multiply (float* dest, float multiplier, int numValues) noexcept;
 
+    /** Copies a source vector to a destination, negating each value. */
+    static void JUCE_CALLTYPE negate (float* dest, const float* src, int numValues) noexcept;
+
     /** Converts a stream of integers to floats, multiplying each one by the given multiplier. */
     static void JUCE_CALLTYPE convertFixedToFloat (float* dest, const int* src, float multiplier, int numValues) noexcept;