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61 lines
1.8 KiB
ArmAsm
61 lines
1.8 KiB
ArmAsm
/* isnan(). PowerPC64 version.
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Copyright (C) 2008-2018 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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/* int __isnan(x) */
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.machine power5
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ENTRY_TOCLESS (__isnan, 4)
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CALL_MCOUNT 0
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stfd fp1,-8(r1) /* copy FPR to GPR */
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lis r0,0x7ff0
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nop /* insure the following is in a different */
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nop /* dispatch group */
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ld r4,-8(r1)
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sldi r0,r0,32 /* const long r0 0x7ff00000 00000000 */
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clrldi r4,r4,1 /* x = fabs(x) */
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cmpd cr7,r4,r0 /* if (fabs(x) <= inf) */
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li r3,0 /* then return 0 */
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blelr+ cr7
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li r3,1 /* else return 1 */
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blr
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END (__isnan)
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hidden_def (__isnan)
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weak_alias (__isnan, isnan)
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/* It turns out that the 'double' version will also always work for
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single-precision. */
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strong_alias (__isnan, __isnanf)
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hidden_def (__isnanf)
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weak_alias (__isnanf, isnanf)
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#ifdef NO_LONG_DOUBLE
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strong_alias (__isnan, __isnanl)
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weak_alias (__isnan, isnanl)
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#endif
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#if !IS_IN (libm)
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# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
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compat_symbol (libc, __isnan, __isnanl, GLIBC_2_0);
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compat_symbol (libc, isnan, isnanl, GLIBC_2_0);
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# endif
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#endif
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