/* Round float to int floating-point values without generating an inexact exception, sparc64 version. Copyright (C) 2013-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by David S. Miller , 2013. 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 /* We pop constants into the FPU registers using the incoming argument stack slots, since this avoid having to use any PIC references. We also thus avoid having to allocate a register window. VIS instructions are used to facilitate the formation of easier constants, and the propagation of the sign bit. */ #define TWO_TWENTYTHREE 0x4b000000 /* 2**23 */ #define ZERO %f10 /* 0.0 */ #define SIGN_BIT %f12 /* -0.0 */ ENTRY (__nearbyintf) stx %fsr, [%sp + STACK_BIAS + 144] sethi %hi(0xf8003e0), %o5 sethi %hi(TWO_TWENTYTHREE), %o2 ldx [%sp + STACK_BIAS + 144], %o4 or %o5, %lo(0xf8003e0), %o5 fzeros ZERO andn %o4, %o5, %o4 fnegs ZERO, SIGN_BIT st %o2, [%sp + STACK_BIAS + 128] stx %o4, [%sp + STACK_BIAS + 136] ldx [%sp + STACK_BIAS + 136], %fsr fabss %f1, %f14 ld [%sp + STACK_BIAS + 128], %f16 fcmps %fcc3, %f14, %f16 fmovsuge %fcc3, ZERO, %f16 fands %f1, SIGN_BIT, SIGN_BIT fors %f16, SIGN_BIT, %f16 fadds %f1, %f16, %f5 fsubs %f5, %f16, %f0 fabss %f0, %f0 fors %f0, SIGN_BIT, %f0 retl ldx [%sp + STACK_BIAS + 144], %fsr END (__nearbyintf) weak_alias (__nearbyintf, nearbyintf)