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75 lines
1.9 KiB
ArmAsm
75 lines
1.9 KiB
ArmAsm
/* Round to int floating-point values. PowerPC32 version.
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Copyright (C) 2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/* This has been coded in assembler because GCC makes such a mess of it
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when it's coded in C. */
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#include <sysdep.h>
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.section .rodata
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.align 3
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.type TWO52.0,@object
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.size TWO52.0,8
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TWO52.0:
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.long 0x43300000
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.long 0
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.section .rodata.cst8,"aM",@progbits,8
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.align 3
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.LC0: /* 2**52 */
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.long 0x43300000
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.long 0
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.section ".text"
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ENTRY (__rint)
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#ifdef SHARED
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mflr r11
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bl _GLOBAL_OFFSET_TABLE_@local-4
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mflr r10
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lwz r9,.LC0@got(10)
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mtlr r11
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lfd fp13,0(r9)
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#else
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lis r9,.LC0@ha
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lfd fp13,.LC0@l(r9)
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#endif
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fabs fp0,fp1
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fsub fp12,fp13,fp13 /* generate 0.0 */
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fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO52) */
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fcmpu cr6,fp1,fp12 /* if (x > 0.0) */
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bnllr- cr7
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bng- cr6,.L4
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fadd fp1,fp1,fp13 /* x+= TWO52; */
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fsub fp1,fp1,fp13 /* x-= TWO52; */
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blr
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.L4:
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bnllr- cr6 /* if (x < 0.0) */
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fsub fp1,fp13,fp1 /* x = TWO52 - x; */
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fsub fp0,fp1,fp13 /* x = - (x - TWO52); */
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fneg fp1,fp0
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blr
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END (__rint)
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weak_alias (__rint, rint)
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#ifdef NO_LONG_DOUBLE
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weak_alias (__rint, rintl)
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strong_alias (__rint, __rintl)
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#endif
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