| 1 | /* roundevenl() - S390 version. |
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| 2 | Copyright (C) 2019-2024 Free Software Foundation, Inc. |
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| 3 | |
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| 4 | This file is part of the GNU C Library. |
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| 5 | |
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| 6 | The GNU C Library is free software; you can redistribute it and/or |
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| 7 | modify it under the terms of the GNU Lesser General Public License as |
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| 8 | published by the Free Software Foundation; either version 2.1 of the |
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| 9 | License, or (at your option) any later version. |
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| 10 | |
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| 11 | The GNU C Library is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | Lesser General Public License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU Lesser General Public |
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| 17 | License along with the GNU C Library; if not, see |
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| 18 | <https://www.gnu.org/licenses/>. */ |
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| 19 | |
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| 20 | #ifdef HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT |
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| 21 | # define NO_MATH_REDIRECT |
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| 22 | # include <math.h> |
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| 23 | # include <math_private.h> |
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| 24 | # include <libm-alias-ldouble.h> |
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| 25 | |
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| 26 | _Float128 |
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| 27 | __roundevenl (_Float128 x) |
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| 28 | { |
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| 29 | _Float128 y; |
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| 30 | /* The z196 zarch "load fp integer" (fixbra) instruction is rounding |
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| 31 | x to the nearest integer with "ties to even" rounding mode |
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| 32 | (M3-field: 4) where inexact exceptions are suppressed (M4-field: 4). */ |
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| 33 | __asm__ ("fixbra %0,4,%1,4" : "=f" (y) : "f" (x)); |
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| 34 | return y; |
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| 35 | } |
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| 36 | libm_alias_ldouble (__roundeven, roundeven) |
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| 37 | |
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| 38 | #else |
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| 39 | # include <sysdeps/ieee754/ldbl-128/s_roundevenl.c> |
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| 40 | #endif |
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| 41 | |
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