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67236aeb6e
This patch contains the miscellaneous math routines and headers we have
implemented for RISC-V. This includes things from <math.h> that aren't
completely ISA-generic, floating-point bit manipulation, and soft-fp
hooks.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/bits/fenv.h: New file.
* sysdeps/riscv/e_sqrtl.c: Likewise.
* sysdeps/riscv/fpu_control.h: Likewise.
* sysdeps/riscv/math-tests.h: Likewise.
* sysdeps/riscv/nofpu/Implies: Likewise.
* sysdeps/riscv/sfp-machine.h: Likewise.
* sysdeps/riscv/tininess.h: Likewise.
75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
/* Floating point environment, RISC-V version.
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Copyright (C) 1998-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _FENV_H
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# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
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#endif
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enum
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{
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FE_INEXACT =
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#define FE_INEXACT (0x01)
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FE_INEXACT,
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FE_UNDERFLOW =
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#define FE_UNDERFLOW (0x02)
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FE_UNDERFLOW,
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FE_OVERFLOW =
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#define FE_OVERFLOW (0x04)
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FE_OVERFLOW,
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FE_DIVBYZERO =
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#define FE_DIVBYZERO (0x08)
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FE_DIVBYZERO,
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FE_INVALID =
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#define FE_INVALID (0x10)
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FE_INVALID
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};
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#define FE_ALL_EXCEPT \
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(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
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enum
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{
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FE_TONEAREST =
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#define FE_TONEAREST (0x0)
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FE_TONEAREST,
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FE_TOWARDZERO =
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#define FE_TOWARDZERO (0x1)
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FE_TOWARDZERO,
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FE_DOWNWARD =
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#define FE_DOWNWARD (0x2)
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FE_DOWNWARD,
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FE_UPWARD =
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#define FE_UPWARD (0x3)
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FE_UPWARD
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};
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typedef unsigned int fexcept_t;
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typedef unsigned int fenv_t;
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/* If the default argument is used we use this value. */
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#define FE_DFL_ENV ((__const fenv_t *) -1)
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#if __GLIBC_USE (IEC_60559_BFP_EXT)
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/* Type representing floating-point control modes. */
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typedef unsigned int femode_t;
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/* Default floating-point control modes. */
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# define FE_DFL_MODE ((const femode_t *) -1L)
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#endif
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