/* rintf(). RISC-V version. Copyright (C) 2017-2018 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 . */ #define NO_MATH_REDIRECT #include #include #include #include float __rintf (float x) { bool nan; float mag; nan = isnan (x); mag = fabsf (x); if (nan) return x + x; if (mag < (1 << __FLT_MANT_DIG__)) { int32_t i; float new_x; asm ("fcvt.w.s %0, %1" : "=r" (i) : "f" (x)); asm ("fcvt.s.w %0, %1" : "=f" (new_x) : "r" (i)); /* rint(-0) == -0, and in general we'll always have the same sign as our input. */ x = copysignf (new_x, x); } return x; } libm_alias_float (__rint, rint)