<div dir="ltr">Thanks for the prompt and helpful replies.<div><br></div><div>Built with --enable-custom-modes --disable-static --enable-intrinsics --enable-rtcd --enable-float-approx</div><div><br></div><div>All worked. Only thing odd, rtcd was not enabled:</div><div><br></div><div><div> Floating point support: ........ yes</div><div> Fast float approximations: ..... yes</div><div> Fixed point debugging: ......... no</div><div> Inline Assembly Optimizations: . No inline ASM for your platform, please send patches</div><div> External Assembly Optimizations: </div><div> Intrinsics Optimizations.......: x86 SSE SSE2 SSE4.1 AVX</div><div> Run-time CPU detection: ........ no</div><div> Custom modes: .................. yes</div></div><div> .......................</div><div><br></div><div>sean</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Nov 14, 2015 at 6:40 PM, Jean-Marc Valin <span dir="ltr"><<a href="mailto:jmvalin@jmvalin.ca" target="_blank">jmvalin@jmvalin.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On 11/13/2015 04:40 PM, Sean Darcy wrote:<br>
> --enable-float-approx, enable fast approximations for floating point<br>
><br>
> does this have a material effect on encoding speed, or quality ?<br>
<br>
</span>The main thing float-approx does is to use polynomial approximations for<br>
log() and exp(). These make the code slightly faster with no impact on<br>
quality. The only reason the option isn't enabled by default is that it<br>
won't work on the (rare) platforms that don't have IEEE 754 floating point.<br>
<span class="HOEnZb"><font color="#888888"><br>
Jean-Marc<br>
</font></span></blockquote></div><br></div>