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Diffstat (limited to 'newlib/libm/machine/spu/headers/lrint.h')
-rw-r--r--newlib/libm/machine/spu/headers/lrint.h63
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
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+++ b/newlib/libm/machine/spu/headers/lrint.h
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+/*
+ (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_ */