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69 lines
2.1 KiB
ArmAsm
69 lines
2.1 KiB
ArmAsm
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/* finite(). PowerPC64/POWER7 version.
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Copyright (C) 2010 Free Software Foundation, Inc.
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Contributed by Luis Machado <luisgpm@br.ibm.com>.
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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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#include <sysdep.h>
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#include <math_ldbl_opt.h>
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/* int __finite(x) */
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.section ".toc","aw"
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.LC0: /* 1.0 */
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.tc FD_ONE[TC],0x3ff0000000000000
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.section ".text"
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.type __finite, @function
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.machine power7
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EALIGN (__finite, 4, 0)
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CALL_MCOUNT 0
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lfd fp0,.LC0@toc(r2)
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ftdiv cr7,fp1,fp0
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li r3,1
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bflr 30
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/* If we are here, we either have +/-INF,
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NaN or denormal. */
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stfd fp1,-16(r1) /* Transfer FP to GPR's. */
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ori 2,2,0 /* Force a new dispatch group. */
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lhz r4,-16(r1) /* Fetch the upper portion of the high word of
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the FP value (where the exponent and sign bits
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are). */
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clrlwi r4,r4,17 /* r4 = abs(r4). */
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cmpwi cr7,r4,0x7ff0 /* r4 == 0x7ff0? */
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bltlr cr7 /* LT means finite, other non-finite. */
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li r3,0
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blr
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END (__finite)
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hidden_def (__finite)
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weak_alias (__finite, finite)
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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 (__finite, __finitef)
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hidden_def (__finitef)
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weak_alias (__finitef, finitef)
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#ifndef IS_IN_libm
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# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
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compat_symbol (libc, __finite, __finitel, GLIBC_2_0);
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compat_symbol (libc, finite, finitel, GLIBC_2_0);
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# endif
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#endif
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