On Jan 13, 4:59 am, Terje Mathisen terje.mathisen at
tmsw.no@giganews.com wrote:
I'll second James' suggestion about SSE2!
I'm open to using SSE2. The only reason I used x87 is that I started
with the assembly code that g++ generated. By default, it generates
x87 instructions. But I'm
James Van Buskirk wrote:
Bill Woessnerwoess...@nospicedham.gmail.com wrote in message
news:67ddafac-ae03-4ef1-b156-5488e8b80...@i26g2000vbt.googlegroups.com...
This compiles, runs and produces the correct answers. But I have a
few issues with it:
1) If I declare this function inline, it
sfuerst wrote:
There is a straight-forward algorithm using the fact that only one of
the bounds can be crossed...
Something like this:
(Inputs in %xmm0, and %xmm1, output in %xmm0)
subsd %xmm1,%xmm0
movsd plusM_PI(%rip), %xmm1
movsd minusM_PI(%rip), %xmm2
cmpgtsd %xmm0, %xmm1
cmpltsd %xmm0,
Tim Roberts wrote:
Terje Mathisenterje.mathisen at tmsw.no@giganews.com wrote:
Inline C isn't too hard to write:
Have you tried this code?
inline double delta(double th1, th2)
{
static double pi = 3.14159265357989;
static double zero_or_twopi[2] = {0, 3.14159265357989*2};
Terje Mathisen terje.mathisen at tmsw.no@giganews.com ha scritto nel
messaggio news:iqe6u8-os52@ntp6.tmsw.no...
inline double delta(double th1, th2)
why not 2 loops [one for normalize delta pi and one for -pi]?
difPimPi(double x, y)
x-=y |?#.2
.1: x=-pi#.3|x+=2*pi|#.1
.2: x
Terje Mathisen terje.mathisen at tmsw.no@giganews.com wrote in message
news:5gh6u8-3062@ntp6.tmsw.no...
sfuerst wrote:
There is a straight-forward algorithm using the fact that only one of
the bounds can be crossed...
Something like this:
(Inputs in %xmm0, and %xmm1, output in %xmm0)
Bill Woessner wrote:
On Jan 13, 4:59 am, Terje Mathisenterje.mathisen at
tmsw.no@giganews.com wrote:
I'll second James' suggestion about SSE2!
I'm open to using SSE2. The only reason I used x87 is that I started
with the assembly code that g++ generated. By default, it generates
x87
Bill Woessner woess...@nospicedham.gmail.com wrote in message
news:67ddafac-ae03-4ef1-b156-5488e8b80...@i26g2000vbt.googlegroups.com...
This compiles, runs and produces the correct answers. But I have a
few issues with it:
1) If I declare this function inline, it gives me garbage (like
