/* isnan(). PowerPC32 version. Copyright (C) 2008-2014 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 . */ #include #include /* int __isnanf(x) */ .machine power5 EALIGN (__isnanf, 4, 0) stwu r1,-32(r1) cfi_adjust_cfa_offset (32) stfs fp1,28(r1) /* copy FPR to GPR */ nop nop lwz r4,28(r1) lis r0,0x7f80 /* const long r0 0x7f800000 */ clrlwi r4,r4,1 /* x = fabs(x) */ cmpw cr7,r4,r0 /* if (fabs(x) =< inf) */ li r3,0 /* then return 0 */ addi r1,r1,32 cfi_adjust_cfa_offset (-32) blelr+ cr7 L(NaN): li r3,1 /* else return 1 */ blr END (__isnanf) hidden_def (__isnanf) weak_alias (__isnanf, isnanf)