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f6ef0657e4
The powerpc64 versions of ceil, floor, round, trunc, rint, nearbyint and their float versions return sNaN for sNaN input when they should return qNaN. This patch fixes them to add a NaN argument to itself to quiet sNaNs before returning. Tested for powerpc64. [BZ #20160] * sysdeps/powerpc/powerpc64/fpu/s_ceil.S (__ceil): Add NaN argument to itself before returning the result. * sysdeps/powerpc/powerpc64/fpu/s_ceilf.S (__ceilf): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_floor.S (__floor): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_floorf.S (__floorf): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_nearbyint.S (__nearbyint): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_nearbyintf.S (__nearbyintf): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_rint.S (__rint): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_rintf.S (__rintf): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_round.S (__round): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_roundf.S (__roundf): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_trunc.S (__trunc): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_truncf.S (__truncf): Likewise.
69 lines
2.1 KiB
ArmAsm
69 lines
2.1 KiB
ArmAsm
/* Round to int floating-point values. PowerPC64 version.
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Copyright (C) 2011-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Adhemerval Zanella <azanella@br.ibm.com>, 2011
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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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/* 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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/* float [fp1] nearbyintf(float [fp1]) */
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.section ".toc","aw"
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.p2align 3
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.LC0: /* 2**23 */
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.long 0x4b000000
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.long 0x0
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.section ".text"
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EALIGN (__nearbyintf, 4, 0)
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CALL_MCOUNT 0
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fabs fp0,fp1
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lfs fp13,.LC0@toc(2)
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fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO52) */
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bge cr7,.L10
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fsubs fp12,fp13,fp13 /* generate 0.0 */
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fcmpu cr7,fp1,fp12 /* if (x > 0.0) */
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ble cr7, L(lessthanzero)
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mffs fp11
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mtfsb0 4*cr7+lt /* Disable FE_INEXACT exception */
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fadds fp1,fp1,fp13 /* x += TWO23 */
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fsubs fp1,fp1,fp13 /* x -= TWO23 */
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fabs fp1,fp1 /* if (x == 0.0) */
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mtfsf 0xff,fp11 /* Restore FE_INEXACT state. */
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blr /* x = 0.0; */
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L(lessthanzero):
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bgelr cr7 /* if (x < 0.0) */
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mffs fp11
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mtfsb0 4*cr7+lt /* Disable FE_INEXACT exception */
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fsubs fp1,fp1,fp13 /* x -= TWO23 */
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fadds fp1,fp1,fp13 /* x += TWO23 */
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fnabs fp1,fp1 /* if (x == 0.0) */
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mtfsf 0xff,fp11 /* Restore FE_INEXACT state. */
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blr /* x = -0.0; */
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.L10:
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/* Ensure sNaN input is converted to qNaN. */
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fcmpu cr7,fp1,fp1
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beqlr cr7
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fadds fp1,fp1,fp1
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blr
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END (__nearbyintf)
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weak_alias (__nearbyintf, nearbyintf)
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