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Diffstat (limited to 'newlib/libm/machine/spu/headers/nextafterf4.h')
| -rw-r--r-- | newlib/libm/machine/spu/headers/nextafterf4.h | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/newlib/libm/machine/spu/headers/nextafterf4.h b/newlib/libm/machine/spu/headers/nextafterf4.h deleted file mode 100644 index 4493db58b..000000000 --- a/newlib/libm/machine/spu/headers/nextafterf4.h +++ /dev/null @@ -1,108 +0,0 @@ -/* -------------------------------------------------------------- */ -/* (C)Copyright 2007,2008, */ -/* International Business Machines Corporation */ -/* 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 IBM Corporation 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. */ -/* -------------------------------------------------------------- */ -/* PROLOG END TAG zYx */ -#ifdef __SPU__ -#ifndef _NEXTAFTERF4_H_ -#define _NEXTAFTERF4_H_ 1 - -#include <spu_intrinsics.h> - -/* - * FUNCTION - * vector float _nextafterf4(vector float x, vector float y) - * - * DESCRIPTION - * The nextafterf4 function returns a vector containing the next representable - * floating-point number after the element of x, in the direction of the - * corresponding element y. - * - * Special Cases: - * - Infinity and NaN are not supported in single-precision on SPU. They are treated - * as normal numbers. - * - x != y, and result = 0 is considered an underflow. - * - * - */ - -static __inline vector float _nextafterf4(vector float x, vector float y) -{ - vec_float4 n1ulp = (vec_float4)spu_splats(0x80000001); - vec_float4 zerof = spu_splats(0.0f); - vec_int4 one = spu_splats(1); - vec_uint4 xlt0, xgty, xeqy, xeq0; - vec_int4 xint; - vec_int4 delta, deltap1; - vec_float4 result; - - /* - * The idea here is to treat x as a signed int value, which allows us to - * add or subtact one to/from it to get the next representable value. - */ - - xeq0 = spu_cmpeq(x, zerof); - xlt0 = spu_cmpgt(zerof, x); - xeqy = spu_cmpeq(x, y); - xgty = spu_cmpgt(x, y); - - /* If x = -0.0, set x = 0.0 */ - x = spu_andc(x, (vec_float4)xeq0); - - xint = (vec_int4)x; - - /* Determine value to add to x */ - delta = (vec_int4)spu_xor(xgty, xlt0); - deltap1 = spu_add(delta,one); - delta = spu_sel(deltap1, delta, (vec_uint4)delta); - - xint = spu_add(xint, delta); - - /* Fix the case of x = 0, and answer should be -1 ulp */ - result = spu_sel((vec_float4)xint, n1ulp, spu_and((vec_uint4)delta, xeq0)); - - /* - * Special Cases - */ - - /* x = y */ - result = spu_sel(result, y, xeqy); - - return result; - -} - -#endif /* _NEXTAFTERF4_H_ */ -#endif /* __SPU__ */ |