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On Thu, 2012-08-02 at 20:31 +0200, Martin Homuth-Rosemann wrote:

[...]

quoted text
> // denormals are zero

> static inline float daz( float f )

> {

>    // define an aliasing type to perform a "reinterpret cast"

>    typedef __u32 __attribute__ (( __may_alias__ )) u32bit;

>    if ( *( (u32bit*)&f ) & 0x7F000000 ) // E > 1 : normal.

>      return f;

>    else // E <=3D 1 : zero or _almost_ denormal

>         // (may become denormal with next operation)

>      return 0.0;

> }

[...]

quoted text
> float reverb( float xin )

> {

>    static float yout =3D 0.0;

>    static float xv0, xv1, yv0, yv1;

>    float x, y;

>=20

>    // additional feedback

>    x  =3D daz( xin/8 + yout/64 );

Branch per sample, eeck...
-dr
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