2011-07-13 05:48:02 -04:00
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dnl mpn_double
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dnl Copyright 2011 The Code Cavern
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dnl This file is part of the MPIR Library.
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dnl The MPIR Library is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU Lesser General Public License as published
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dnl by the Free Software Foundation; either version 2.1 of the License, or (at
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dnl your option) any later version.
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dnl The MPIR Library is distributed in the hope that it will be useful, but
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dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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dnl License for more details.
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dnl You should have received a copy of the GNU Lesser General Public License
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dnl along with the MPIR Library; see the file COPYING.LIB. If not, write
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dnl to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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dnl Boston, MA 02110-1301, USA.
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include(`../config.m4')
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ASM_START()
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PROLOGUE(mpn_double)
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mov %rsi,%rax
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shr $2,%rsi
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and $3,%eax
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jz t1
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shlq $1,(%rdi)
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lea 8(%rdi),%rdi
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dec %rax
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jz t1
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rclq $1,(%rdi)
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lea 8(%rdi),%rdi
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dec %rax
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jz t1
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rclq $1,(%rdi)
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lea 8(%rdi),%rdi
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2011-07-13 08:54:47 -04:00
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dec %rax
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2011-07-13 05:48:02 -04:00
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t1:
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sbb %rdx,%rdx
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cmp $0,%rsi
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jz skiplp
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add %rdx,%rdx
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.align 16
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lp:
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rclq $1,(%rdi)
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nop
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rclq $1,8(%rdi)
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rclq $1,16(%rdi)
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rclq $1,24(%rdi)
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nop
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dec %rsi
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lea 32(%rdi),%rdi
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jnz lp
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sbb %rdx,%rdx
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skiplp:
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2011-07-13 08:54:47 -04:00
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sub %rdx,%rax
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2011-07-13 05:48:02 -04:00
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ret
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EPILOGUE()
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