Re: [FFmpeg-devel] [PATCHv2] configure+libm.h: add hypot emulation

2015-11-21 Thread Ganesh Ajjanagadde
On Tue, Nov 17, 2015 at 11:05 AM, Hendrik Leppkes wrote: > On Tue, Nov 17, 2015 at 5:00 PM, Ganesh Ajjanagadde wrote: >> On Sun, Nov 15, 2015 at 11:59 AM, Ganesh Ajjanagadde >> wrote: >>> On Sun, Nov 15, 2015 at 11:34 AM, Michael Niedermayer >>> wrote: On Sun, Nov 15, 2015 at 11:01:58AM -

Re: [FFmpeg-devel] [PATCHv2] configure+libm.h: add hypot emulation

2015-11-17 Thread Hendrik Leppkes
On Tue, Nov 17, 2015 at 5:00 PM, Ganesh Ajjanagadde wrote: > On Sun, Nov 15, 2015 at 11:59 AM, Ganesh Ajjanagadde wrote: >> On Sun, Nov 15, 2015 at 11:34 AM, Michael Niedermayer >> wrote: >>> On Sun, Nov 15, 2015 at 11:01:58AM -0500, Ganesh Ajjanagadde wrote: On Sun, Nov 15, 2015 at 10:56 A

Re: [FFmpeg-devel] [PATCHv2] configure+libm.h: add hypot emulation

2015-11-17 Thread Ganesh Ajjanagadde
On Sun, Nov 15, 2015 at 11:59 AM, Ganesh Ajjanagadde wrote: > On Sun, Nov 15, 2015 at 11:34 AM, Michael Niedermayer > wrote: >> On Sun, Nov 15, 2015 at 11:01:58AM -0500, Ganesh Ajjanagadde wrote: >>> On Sun, Nov 15, 2015 at 10:56 AM, Michael Niedermayer >>> wrote: >>> > On Sun, Nov 15, 2015 at 1

Re: [FFmpeg-devel] [PATCHv2] configure+libm.h: add hypot emulation

2015-11-15 Thread Ganesh Ajjanagadde
On Sun, Nov 15, 2015 at 11:34 AM, Michael Niedermayer wrote: > On Sun, Nov 15, 2015 at 11:01:58AM -0500, Ganesh Ajjanagadde wrote: >> On Sun, Nov 15, 2015 at 10:56 AM, Michael Niedermayer >> wrote: >> > On Sun, Nov 15, 2015 at 10:03:37AM -0500, Ganesh Ajjanagadde wrote: >> >> It is known that the

Re: [FFmpeg-devel] [PATCHv2] configure+libm.h: add hypot emulation

2015-11-15 Thread Michael Niedermayer
On Sun, Nov 15, 2015 at 11:01:58AM -0500, Ganesh Ajjanagadde wrote: > On Sun, Nov 15, 2015 at 10:56 AM, Michael Niedermayer > wrote: > > On Sun, Nov 15, 2015 at 10:03:37AM -0500, Ganesh Ajjanagadde wrote: > >> It is known that the naive sqrt(x*x + y*y) approach for computing the > >> hypotenuse su

Re: [FFmpeg-devel] [PATCHv2] configure+libm.h: add hypot emulation

2015-11-15 Thread Ganesh Ajjanagadde
On Sun, Nov 15, 2015 at 10:56 AM, Michael Niedermayer wrote: > On Sun, Nov 15, 2015 at 10:03:37AM -0500, Ganesh Ajjanagadde wrote: >> It is known that the naive sqrt(x*x + y*y) approach for computing the >> hypotenuse suffers from overflow and accuracy issues, see e.g >> http://www.johndcook.com/b

Re: [FFmpeg-devel] [PATCHv2] configure+libm.h: add hypot emulation

2015-11-15 Thread Michael Niedermayer
On Sun, Nov 15, 2015 at 10:03:37AM -0500, Ganesh Ajjanagadde wrote: > It is known that the naive sqrt(x*x + y*y) approach for computing the > hypotenuse suffers from overflow and accuracy issues, see e.g > http://www.johndcook.com/blog/2010/06/02/whats-so-hard-about-finding-a-hypotenuse/. > This ad