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50 lines
1.5 KiB
ArmAsm
50 lines
1.5 KiB
ArmAsm
/* Copy a sign bit between floating-point values.
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IBM extended format long double version.
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Copyright (C) 2006-2016 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, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <math_ldbl_opt.h>
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ENTRY(__copysignl)
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/* long double [f1,f2] copysign (long double [f1,f2] x, long double [f3,f4] y);
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copysign(x,y) returns a value with the magnitude of x and
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with the sign bit of y. */
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stwu r1,-16(r1)
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cfi_adjust_cfa_offset (16)
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stfd fp3,8(r1)
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fmr fp0,fp1
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fabs fp1,fp1
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fcmpu cr7,fp0,fp1
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lwz r3,8+HIWORD(r1)
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cmpwi cr6,r3,0
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addi r1,r1,16
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cfi_adjust_cfa_offset (-16)
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beq cr7,L(0)
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fneg fp2,fp2
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L(0): bgelr cr6
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fneg fp1,fp1
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fneg fp2,fp2
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blr
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END (__copysignl)
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#if IS_IN (libm)
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long_double_symbol (libm, __copysignl, copysignl)
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#else
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long_double_symbol (libc, __copysignl, copysignl)
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#endif
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