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62 lines
1.9 KiB
ArmAsm
62 lines
1.9 KiB
ArmAsm
/* isinf(). PowerPC64/POWER8 version.
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Copyright (C) 2014-2016 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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#define MFVSRD_R3_V1 .long 0x7c230066 /* mfvsrd r3,vs1 */
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/* int [r3] __isinf([fp1] x) */
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EALIGN (__isinf, 4, 0)
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CALL_MCOUNT 0
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MFVSRD_R3_V1
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lis r9,0x7ff0 /* r9 = 0x7ff0 */
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rldicl r10,r3,0,1 /* r10 = r3 & (0x8000000000000000) */
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sldi r9,r9,32 /* r9 = r9 << 52 */
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cmpd cr7,r10,r9 /* fp1 & 0x7ff0000000000000 ? */
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beq cr7,L(inf)
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li r3,0 /* Not inf */
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blr
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L(inf):
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sradi r3,r3,63 /* r3 = r3 >> 63 */
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ori r3,r3,1 /* r3 = r3 | 0x1 */
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blr
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END (__isinf)
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hidden_def (__isinf)
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weak_alias (__isinf, isinf)
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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 (__isinf, __isinff)
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hidden_def (__isinff)
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weak_alias (__isinff, isinff)
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#ifdef NO_LONG_DOUBLE
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strong_alias (__isinf, __isinfl)
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weak_alias (__isinf, isinfl)
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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, __isinf, __isinfl, GLIBC_2_0);
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compat_symbol (libc, isinf, isinfl, GLIBC_2_0);
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# endif
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#endif
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