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Diffstat (limited to 'newlib/libm/machine/spu/headers/lrint.h')
-rw-r--r-- | newlib/libm/machine/spu/headers/lrint.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/newlib/libm/machine/spu/headers/lrint.h b/newlib/libm/machine/spu/headers/lrint.h new file mode 100644 index 000000000..818720a12 --- /dev/null +++ b/newlib/libm/machine/spu/headers/lrint.h @@ -0,0 +1,63 @@ +/* + (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 _LRINT_H_ +#define _LRINT_H_ 1 + +#include <spu_intrinsics.h> +#include "headers/vec_literal.h" + +/* Round the input to the nearest integer according to the current + * rounding mode. + */ +static __inline long int _lrint(double x) +{ + vec_int4 out, sign; + vec_double2 in, addend; + + in = spu_promote(x, 0); + + /* Add 2^53 affect a round to be performed by the hardware. + */ + addend = spu_sel((vec_double2)(VEC_SPLAT_U64(0x4330000000000000ULL)), + in, VEC_SPLAT_U64(0x8000000000000000ULL)); + out = (vec_int4)spu_rlqwbyte(spu_add(in, addend), 4); + + /* Correct the output sign. + */ + sign = spu_rlmaska((vec_int4)in, -31); + + out = spu_sub(spu_xor(out, sign), sign); + + return ((long int)spu_extract(out, 0)); +} +#endif /* _LRINT_H_ */ |