Contributors: 6
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Russell King |
299 |
51.11% |
3 |
25.00% |
| Linus Torvalds (pre-git) |
219 |
37.44% |
4 |
33.33% |
| Richard Purdie |
46 |
7.86% |
1 |
8.33% |
| Ralph Siemsen |
12 |
2.05% |
2 |
16.67% |
| Linus Torvalds |
7 |
1.20% |
1 |
8.33% |
| Thomas Gleixner |
2 |
0.34% |
1 |
8.33% |
| Total |
585 |
|
12 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
NetWinder Floating Point Emulator
(c) Rebel.COM, 1998,1999
(c) Philip Blundell, 2001
Direct questions, comments to Scott Bambrough <scottb@netwinder.org>
*/
#include "fpa11.h"
#include "softfloat.h"
#include "fpopcode.h"
float32 float32_exp(float32 Fm);
float32 float32_ln(float32 Fm);
float32 float32_sin(float32 rFm);
float32 float32_cos(float32 rFm);
float32 float32_arcsin(float32 rFm);
float32 float32_arctan(float32 rFm);
float32 float32_log(float32 rFm);
float32 float32_tan(float32 rFm);
float32 float32_arccos(float32 rFm);
float32 float32_pow(float32 rFn, float32 rFm);
float32 float32_pol(float32 rFn, float32 rFm);
static float32 float32_rsf(struct roundingData *roundData, float32 rFn, float32 rFm)
{
return float32_sub(roundData, rFm, rFn);
}
static float32 float32_rdv(struct roundingData *roundData, float32 rFn, float32 rFm)
{
return float32_div(roundData, rFm, rFn);
}
static float32 (*const dyadic_single[16])(struct roundingData *, float32 rFn, float32 rFm) = {
[ADF_CODE >> 20] = float32_add,
[MUF_CODE >> 20] = float32_mul,
[SUF_CODE >> 20] = float32_sub,
[RSF_CODE >> 20] = float32_rsf,
[DVF_CODE >> 20] = float32_div,
[RDF_CODE >> 20] = float32_rdv,
[RMF_CODE >> 20] = float32_rem,
[FML_CODE >> 20] = float32_mul,
[FDV_CODE >> 20] = float32_div,
[FRD_CODE >> 20] = float32_rdv,
};
static float32 float32_mvf(struct roundingData *roundData, float32 rFm)
{
return rFm;
}
static float32 float32_mnf(struct roundingData *roundData, float32 rFm)
{
return rFm ^ 0x80000000;
}
static float32 float32_abs(struct roundingData *roundData, float32 rFm)
{
return rFm & 0x7fffffff;
}
static float32 (*const monadic_single[16])(struct roundingData*, float32 rFm) = {
[MVF_CODE >> 20] = float32_mvf,
[MNF_CODE >> 20] = float32_mnf,
[ABS_CODE >> 20] = float32_abs,
[RND_CODE >> 20] = float32_round_to_int,
[URD_CODE >> 20] = float32_round_to_int,
[SQT_CODE >> 20] = float32_sqrt,
[NRM_CODE >> 20] = float32_mvf,
};
unsigned int SingleCPDO(struct roundingData *roundData, const unsigned int opcode, FPREG * rFd)
{
FPA11 *fpa11 = GET_FPA11();
float32 rFm;
unsigned int Fm, opc_mask_shift;
Fm = getFm(opcode);
if (CONSTANT_FM(opcode)) {
rFm = getSingleConstant(Fm);
} else if (fpa11->fType[Fm] == typeSingle) {
rFm = fpa11->fpreg[Fm].fSingle;
} else {
return 0;
}
opc_mask_shift = (opcode & MASK_ARITHMETIC_OPCODE) >> 20;
if (!MONADIC_INSTRUCTION(opcode)) {
unsigned int Fn = getFn(opcode);
float32 rFn;
if (fpa11->fType[Fn] == typeSingle &&
dyadic_single[opc_mask_shift]) {
rFn = fpa11->fpreg[Fn].fSingle;
rFd->fSingle = dyadic_single[opc_mask_shift](roundData, rFn, rFm);
} else {
return 0;
}
} else {
if (monadic_single[opc_mask_shift]) {
rFd->fSingle = monadic_single[opc_mask_shift](roundData, rFm);
} else {
return 0;
}
}
return 1;
}