| /* isnan(). PowerPC64/POWER8 version. |
| Copyright (C) 2014 Free Software Foundation, Inc. |
| 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 <endian.h> |
| #include <math_ldbl_opt.h> |
| |
| #if __BYTE_ORDER == __LITTLE_ENDIAN |
| #define MFVSRD_R3_V1 .byte 0x66,0x00,0x23,0x7c /* mfvsrd r3,vs1 */ |
| #else |
| #define MFVSRD_R3_V1 .byte 0x7c,0x23,0x00,0x66 /* mfvsrd r3,vs1 */ |
| #endif |
| |
| /* int [r3] __isnan([f1] x) */ |
| |
| EALIGN (__isnan, 4, 0) |
| CALL_MCOUNT 0 |
| MFVSRD_R3_V1 |
| lis r9,0x7ff0 |
| clrldi r3,r3,1 /* r3 = r3 & 0x8000000000000000 */ |
| rldicr r9,r9,32,31 /* r9 = (r9 << 32) & 0xffffffff */ |
| subf r3,r3,r9 |
| rldicl r3,r3,1,63 |
| blr |
| END (__isnan) |
| |
| hidden_def (__isnan) |
| weak_alias (__isnan, isnan) |
| |
| /* It turns out that the 'double' version will also always work for |
| single-precision. */ |
| strong_alias (__isnan, __isnanf) |
| hidden_def (__isnanf) |
| weak_alias (__isnanf, isnanf) |
| |
| #ifdef NO_LONG_DOUBLE |
| strong_alias (__isnan, __isnanl) |
| weak_alias (__isnan, isnanl) |
| #endif |
| |
| #ifndef IS_IN_libm |
| # if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0) |
| compat_symbol (libc, __isnan, __isnanl, GLIBC_2_0); |
| compat_symbol (libc, isnan, isnanl, GLIBC_2_0); |
| # endif |
| #endif |
