| /* finite(). PowerPC64/POWER7 version. |
| Copyright (C) 2010-2018 Free Software Foundation, Inc. |
| Contributed by Luis Machado <luisgpm@br.ibm.com>. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sysdep.h> |
| #include <math_ldbl_opt.h> |
| |
| /* int __finite(x) */ |
| .section ".toc","aw" |
| .LC0: /* 1.0 */ |
| .tc FD_ONE[TC],0x3ff0000000000000 |
| .section ".text" |
| .type __finite, @function |
| .machine power7 |
| ENTRY (__finite, 4) |
| CALL_MCOUNT 0 |
| lfd fp0,.LC0@toc(r2) |
| ftdiv cr7,fp1,fp0 |
| li r3,1 |
| bflr 30 |
| |
| /* If we are here, we either have +/-INF, |
| NaN or denormal. */ |
| |
| stfd fp1,-16(r1) /* Transfer FP to GPR's. */ |
| ori 2,2,0 /* Force a new dispatch group. */ |
| lhz r4,-16+HISHORT(r1) /* Fetch the upper 16 bits of the FP value |
| (biased exponent and sign bit). */ |
| clrlwi r4,r4,17 /* r4 = abs(r4). */ |
| cmpwi cr7,r4,0x7ff0 /* r4 == 0x7ff0? */ |
| bltlr cr7 /* LT means finite, other non-finite. */ |
| li r3,0 |
| blr |
| END (__finite) |
| |
| hidden_def (__finite) |
| weak_alias (__finite, finite) |
| |
| /* It turns out that the 'double' version will also always work for |
| single-precision. */ |
| strong_alias (__finite, __finitef) |
| hidden_def (__finitef) |
| weak_alias (__finitef, finitef) |
| |
| #if IS_IN (libm) |
| # if LONG_DOUBLE_COMPAT (libm, GLIBC_2_0) |
| compat_symbol (libm, __finite, __finitel, GLIBC_2_0) |
| compat_symbol (libm, finite, finitel, GLIBC_2_0) |
| # endif |
| #else |
| # if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0) |
| compat_symbol (libc, __finite, __finitel, GLIBC_2_0); |
| compat_symbol (libc, finite, finitel, GLIBC_2_0); |
| # endif |
| #endif |
