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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program 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 general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 441 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
112 lines
2.8 KiB
C
112 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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NetWinder Floating Point Emulator
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(c) Rebel.COM, 1998,1999
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(c) Philip Blundell, 2001
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Direct questions, comments to Scott Bambrough <scottb@netwinder.org>
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*/
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#include "fpa11.h"
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#include "softfloat.h"
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#include "fpopcode.h"
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float32 float32_exp(float32 Fm);
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float32 float32_ln(float32 Fm);
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float32 float32_sin(float32 rFm);
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float32 float32_cos(float32 rFm);
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float32 float32_arcsin(float32 rFm);
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float32 float32_arctan(float32 rFm);
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float32 float32_log(float32 rFm);
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float32 float32_tan(float32 rFm);
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float32 float32_arccos(float32 rFm);
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float32 float32_pow(float32 rFn, float32 rFm);
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float32 float32_pol(float32 rFn, float32 rFm);
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static float32 float32_rsf(struct roundingData *roundData, float32 rFn, float32 rFm)
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{
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return float32_sub(roundData, rFm, rFn);
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}
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static float32 float32_rdv(struct roundingData *roundData, float32 rFn, float32 rFm)
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{
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return float32_div(roundData, rFm, rFn);
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}
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static float32 (*const dyadic_single[16])(struct roundingData *, float32 rFn, float32 rFm) = {
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[ADF_CODE >> 20] = float32_add,
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[MUF_CODE >> 20] = float32_mul,
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[SUF_CODE >> 20] = float32_sub,
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[RSF_CODE >> 20] = float32_rsf,
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[DVF_CODE >> 20] = float32_div,
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[RDF_CODE >> 20] = float32_rdv,
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[RMF_CODE >> 20] = float32_rem,
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[FML_CODE >> 20] = float32_mul,
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[FDV_CODE >> 20] = float32_div,
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[FRD_CODE >> 20] = float32_rdv,
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};
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static float32 float32_mvf(struct roundingData *roundData, float32 rFm)
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{
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return rFm;
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}
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static float32 float32_mnf(struct roundingData *roundData, float32 rFm)
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{
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return rFm ^ 0x80000000;
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}
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static float32 float32_abs(struct roundingData *roundData, float32 rFm)
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{
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return rFm & 0x7fffffff;
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}
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static float32 (*const monadic_single[16])(struct roundingData*, float32 rFm) = {
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[MVF_CODE >> 20] = float32_mvf,
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[MNF_CODE >> 20] = float32_mnf,
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[ABS_CODE >> 20] = float32_abs,
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[RND_CODE >> 20] = float32_round_to_int,
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[URD_CODE >> 20] = float32_round_to_int,
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[SQT_CODE >> 20] = float32_sqrt,
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[NRM_CODE >> 20] = float32_mvf,
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};
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unsigned int SingleCPDO(struct roundingData *roundData, const unsigned int opcode, FPREG * rFd)
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{
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FPA11 *fpa11 = GET_FPA11();
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float32 rFm;
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unsigned int Fm, opc_mask_shift;
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Fm = getFm(opcode);
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if (CONSTANT_FM(opcode)) {
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rFm = getSingleConstant(Fm);
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} else if (fpa11->fType[Fm] == typeSingle) {
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rFm = fpa11->fpreg[Fm].fSingle;
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} else {
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return 0;
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}
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opc_mask_shift = (opcode & MASK_ARITHMETIC_OPCODE) >> 20;
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if (!MONADIC_INSTRUCTION(opcode)) {
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unsigned int Fn = getFn(opcode);
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float32 rFn;
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if (fpa11->fType[Fn] == typeSingle &&
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dyadic_single[opc_mask_shift]) {
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rFn = fpa11->fpreg[Fn].fSingle;
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rFd->fSingle = dyadic_single[opc_mask_shift](roundData, rFn, rFm);
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} else {
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return 0;
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}
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} else {
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if (monadic_single[opc_mask_shift]) {
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rFd->fSingle = monadic_single[opc_mask_shift](roundData, rFm);
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} else {
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return 0;
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}
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}
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return 1;
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}
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