diff options
Diffstat (limited to 'newlib/libm/machine/spu/headers/ldexpf.h')
-rw-r--r-- | newlib/libm/machine/spu/headers/ldexpf.h | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/newlib/libm/machine/spu/headers/ldexpf.h b/newlib/libm/machine/spu/headers/ldexpf.h deleted file mode 100644 index f04f85345..000000000 --- a/newlib/libm/machine/spu/headers/ldexpf.h +++ /dev/null @@ -1,77 +0,0 @@ -/* - (C) Copyright 2001,2006, - International Business Machines Corporation, - Sony Computer Entertainment, Incorporated, - Toshiba 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 names of the copyright holders nor the names of their - 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 _LDEXPF_H_ -#define _LDEXPF_H_ 1 - -#include <spu_intrinsics.h> -#include "headers/vec_literal.h" - -/* ldexpf computes x * 2^exp. This function is computed without - * the assistence of any floating point operations and as such does - * not set any floating point exceptions. - */ -static __inline float _ldexpf(float x, int exp) -{ - vec_int4 x_exp; - vec_uint4 zero, overflow; - vec_uint4 exp_mask = VEC_SPLAT_U32(0x7F800000); - vec_float4 in, out; - - in = spu_promote(x, 0); - - /* Extract exponent from x. If the exponent is 0, then - * x is either 0 or a denorm and x*2^exp is a zero. - */ - x_exp = spu_and(spu_rlmask((vec_int4)in, -23), 0xFF); - - zero = spu_cmpeq(x_exp, 0); - - /* Compute the expected exponent and determine if the - * result is within range. - */ - x_exp = spu_add(spu_promote(exp, 0), x_exp); - - zero = spu_orc(zero, spu_cmpgt(x_exp, 0)); - - overflow = spu_rlmask(spu_cmpgt(x_exp, 255), -1); - - /* Merge the expect exponent with x's mantissa. Zero the - * result if underflow and force to max if overflow. - */ - out = spu_sel(in, (vec_float4)spu_rl(x_exp, 23), exp_mask); - out = spu_andc(out, (vec_float4)zero); - out = spu_or(out, (vec_float4)overflow); - - return (spu_extract(out, 0)); -} -#endif /* _LDEXPF_H_ */ |