added updated version of simdmathlibrary-1.0.1

2007-07-27 18:53:58 +00:00
parent fddd6c5721
commit f360dd27d6
377 changed files with 9928 additions and 6136 deletions
--- a/Extras/simdmathlibrary/ppu/simdmath/sinf4.h
+++ b/Extras/simdmathlibrary/ppu/simdmath/sinf4.h
@@ -0,0 +1,107 @@
+/* sinf4 - 
+   Copyright (C) 2006, 2007 Sony Computer Entertainment Inc.
+   All rights reserved.
+
+   Redistribution and use in source and binary forms,
+   with or without modification, are permitted provided that the
+   following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the Sony Computer Entertainment Inc nor the names
+      of its contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ___SIMD_MATH_SINF4_H___
+#define ___SIMD_MATH_SINF4_H___
+
+#include <simdmath.h>
+#include <altivec.h>
+
+#include <simdmath/_sincos.h>
+#include <simdmath/_vec_utils.h>
+//
+//     Computes the sine of each of the four slots
+//     by using a polynomial approximation.
+//
+
+static inline vector float
+_sinf4 (vector float x)
+{
+  vector float xl,xl2,xl3,res;
+  vector signed int   q;
+
+  // Range reduction using : xl = angle * TwoOverPi;
+  //  
+  xl = vec_madd(x, __vec_splatsf4(0.63661977236f),__vec_splatsf4(0.0f));
+
+  // Find the quadrant the angle falls in
+  // using:  q = (int) (ceil(abs(xl))*sign(xl))
+  //
+  xl = vec_add(xl,vec_sel(__vec_splatsf4(0.5f),xl,__vec_splatsu4(0x80000000)));
+  q = vec_cts(xl,0);
+
+     
+  // Compute an offset based on the quadrant that the angle falls in
+  // 
+  vector signed int offset = vec_and(q,__vec_splatsi4((int)0x3));
+
+  // Remainder in range [-pi/4..pi/4]
+  //
+  vector float qf = vec_ctf(q,0);
+  vector float p1 = vec_nmsub(qf,__vec_splatsf4(__SINCOSF_KC1),x);
+  xl  = vec_nmsub(qf,__vec_splatsf4(__SINCOSF_KC2),p1);
+    
+  // Compute x^2 and x^3
+  //
+  xl2 = vec_madd(xl,xl,__vec_splatsf4(0.0f));
+  xl3 = vec_madd(xl2,xl,__vec_splatsf4(0.0f));
+    
+
+  // Compute both the sin and cos of the angles
+  // using a polynomial expression:
+  //   cx = 1.0f + xl2 * ((C0 * xl2 + C1) * xl2 + C2), and
+  //   sx = xl + xl3 * ((S0 * xl2 + S1) * xl2 + S2)
+  //
+  vector float ct1 = vec_madd(__vec_splatsf4(__SINCOSF_CC0),xl2,__vec_splatsf4(__SINCOSF_CC1));
+  vector float st1 = vec_madd(__vec_splatsf4(__SINCOSF_SC0),xl2,__vec_splatsf4(__SINCOSF_SC1));
+
+  vector float ct2 = vec_madd(ct1,xl2,__vec_splatsf4(__SINCOSF_CC2));
+  vector float st2 = vec_madd(st1,xl2,__vec_splatsf4(__SINCOSF_SC2));
+    
+  vector float cx = vec_madd(ct2,xl2,__vec_splatsf4(1.0f));
+  vector float sx = vec_madd(st2,xl3,xl);
+
+  // Use the cosine when the offset is odd and the sin
+  // when the offset is even
+  //
+  vector unsigned int mask1 = (vector unsigned int)vec_cmpeq(vec_and(offset,
+								     __vec_splatsi4(0x1)),
+							     __vec_splatsi4((int)(0)));
+  res = vec_sel(cx,sx,mask1);
+
+  // Flip the sign of the result when (offset mod 4) = 1 or 2
+  //
+  vector unsigned int mask2 =
+    (vector unsigned int)vec_cmpeq(vec_and(offset,__vec_splatsi4(0x2)),__vec_splatsi4((int)0));
+  res = vec_sel((vector float)vec_xor(__vec_splatsu4(0x80000000U),(vector unsigned int)res),res,mask2);
+
+  return res;
+}
+
+#endif