1 /* @(#) pfinnrfp.h 98/02/26 1.4 */
2 /***************************************************************
3 ** Compile FP routines.
4 ** This file is included from "pf_inner.c"
6 ** These routines could be left out of an execute only version.
8 ** Author: Darren Gibbs, Phil Burk
9 ** Copyright 1994 3DO, Phil Burk, Larry Polansky, David Rosenboom
11 ** Permission to use, copy, modify, and/or distribute this
12 ** software for any purpose with or without fee is hereby granted.
14 ** THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
15 ** WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
16 ** WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
17 ** THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
18 ** CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
19 ** FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
20 ** CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
21 ** OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 ****************************************************************
25 ***************************************************************/
29 #define FP_DHI1 (((PF_FLOAT)((cell_t)1<<(sizeof(cell_t)*8-2)))*4.0)
31 case ID_FP_D_TO_F: /* ( dlo dhi -- ) ( F: -- r ) */
33 Scratch = M_POP; /* dlo */
34 DBUG(("dlo = 0x%8x , ", Scratch));
35 DBUG(("dhi = 0x%8x\n", TOS));
37 if( ((TOS == 0) && (Scratch >= 0)) ||
38 ((TOS == -1) && (Scratch < 0)))
40 /* <= 32 bit precision. */
41 FP_TOS = ((PF_FLOAT) Scratch); /* Convert dlo and push on FP stack. */
43 else /* > 32 bit precision. */
45 fpTemp = ((PF_FLOAT) TOS); /* dhi */
47 fpScratch = ( (PF_FLOAT) ((ucell_t)Scratch) ); /* Convert TOS and push on FP stack. */
48 FP_TOS = fpTemp + fpScratch;
51 /* printf("d2f = %g\n", FP_TOS); */
54 case ID_FP_FSTORE: /* ( addr -- ) ( F: r -- ) */
55 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))
56 if( IN_CODE_DIC(TOS) )
58 WRITE_FLOAT_DIC( (PF_FLOAT *) TOS, FP_TOS );
62 *((PF_FLOAT *) TOS) = FP_TOS;
65 *((PF_FLOAT *) TOS) = FP_TOS;
67 M_FP_DROP; /* drop FP value */
68 M_DROP; /* drop addr */
71 case ID_FP_FTIMES: /* ( F: r1 r2 -- r1*r2 ) */
72 FP_TOS = M_FP_POP * FP_TOS;
75 case ID_FP_FPLUS: /* ( F: r1 r2 -- r1+r2 ) */
76 FP_TOS = M_FP_POP + FP_TOS;
79 case ID_FP_FMINUS: /* ( F: r1 r2 -- r1-r2 ) */
80 FP_TOS = M_FP_POP - FP_TOS;
83 case ID_FP_FSLASH: /* ( F: r1 r2 -- r1/r2 ) */
84 FP_TOS = M_FP_POP / FP_TOS;
87 case ID_FP_F_ZERO_LESS_THAN: /* ( -- flag ) ( F: r -- ) */
89 TOS = (FP_TOS < 0.0) ? FTRUE : FFALSE ;
93 case ID_FP_F_ZERO_EQUALS: /* ( -- flag ) ( F: r -- ) */
95 TOS = (FP_TOS == 0.0) ? FTRUE : FFALSE ;
99 case ID_FP_F_LESS_THAN: /* ( -- flag ) ( F: r1 r2 -- ) */
101 TOS = (M_FP_POP < FP_TOS) ? FTRUE : FFALSE ;
105 case ID_FP_F_TO_D: /* ( -- dlo dhi) ( F: r -- ) */
106 /* printf("f2d = %g\n", FP_TOS); */
111 /* Convert absolute value, then negate D if negative. */
112 PUSH_TOS; /* Save old TOS */
115 ifNeg = (fpTemp < 0.0);
118 fpTemp = 0.0 - fpTemp;
120 fpScratch = fpTemp / FP_DHI1;
121 /* printf("f2d - fpScratch = %g\n", fpScratch); */
122 dhi = (cell_t) fpScratch; /* dhi */
123 fpScratch = ((PF_FLOAT) dhi) * FP_DHI1;
124 /* printf("f2d - , dhi = 0x%x, fpScratch = %g\n", dhi, fpScratch); */
126 fpTemp = fpTemp - fpScratch; /* Remainder */
127 dlo = (ucell_t) fpTemp;
128 /* printf("f2d - , dlo = 0x%x, fpTemp = %g\n", dlo, fpTemp); */
134 /* Push onto stack. */
141 case ID_FP_FFETCH: /* ( addr -- ) ( F: -- r ) */
143 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))
144 if( IN_CODE_DIC(TOS) )
146 FP_TOS = READ_FLOAT_DIC( (PF_FLOAT *) TOS );
150 FP_TOS = *((PF_FLOAT *) TOS);
153 FP_TOS = *((PF_FLOAT *) TOS);
158 case ID_FP_FDEPTH: /* ( -- n ) ( F: -- ) */
160 /* Add 1 to account for FP_TOS in cached in register. */
161 TOS = (( M_FP_SPZERO - FP_STKPTR) + 1);
164 case ID_FP_FDROP: /* ( -- ) ( F: r -- ) */
168 case ID_FP_FDUP: /* ( -- ) ( F: r -- r r ) */
172 case ID_FP_FLOAT_PLUS: /* ( addr1 -- addr2 ) ( F: -- ) */
173 TOS = TOS + sizeof(PF_FLOAT);
176 case ID_FP_FLOATS: /* ( n -- size ) ( F: -- ) */
177 TOS = TOS * sizeof(PF_FLOAT);
180 case ID_FP_FLOOR: /* ( -- ) ( F: r1 -- r2 ) */
181 FP_TOS = (PF_FLOAT) fp_floor( FP_TOS );
184 case ID_FP_FMAX: /* ( -- ) ( F: r1 r2 -- r3 ) */
185 fpScratch = M_FP_POP;
186 FP_TOS = ( FP_TOS > fpScratch ) ? FP_TOS : fpScratch ;
189 case ID_FP_FMIN: /* ( -- ) ( F: r1 r2 -- r3 ) */
190 fpScratch = M_FP_POP;
191 FP_TOS = ( FP_TOS < fpScratch ) ? FP_TOS : fpScratch ;
198 case ID_FP_FOVER: /* ( -- ) ( F: r1 r2 -- r1 r2 r1 ) */
200 FP_TOS = M_FP_STACK(1);
203 case ID_FP_FROT: /* ( -- ) ( F: r1 r2 r3 -- r2 r3 r1 ) */
204 fpScratch = M_FP_POP; /* r2 */
205 fpTemp = M_FP_POP; /* r1 */
206 M_FP_PUSH( fpScratch ); /* r2 */
207 PUSH_FP_TOS; /* r3 */
208 FP_TOS = fpTemp; /* r1 */
213 TOS = (cell_t)fp_round(FP_TOS);
217 case ID_FP_FSWAP: /* ( -- ) ( F: r1 r2 -- r2 r1 ) */
220 *FP_STKPTR = fpScratch;
223 case ID_FP_FSTAR_STAR: /* ( -- ) ( F: r1 r2 -- r1^r2 ) */
224 fpScratch = M_FP_POP;
225 FP_TOS = (PF_FLOAT) fp_pow(fpScratch, FP_TOS);
228 case ID_FP_FABS: /* ( -- ) ( F: r1 -- r2 ) */
229 FP_TOS = (PF_FLOAT) fp_fabs( FP_TOS );
232 case ID_FP_FACOS: /* ( -- ) ( F: r1 -- r2 ) */
233 FP_TOS = (PF_FLOAT) fp_acos( FP_TOS );
236 case ID_FP_FACOSH: /* ( -- ) ( F: r1 -- r2 ) */
237 /* fp_acosh(x) = fp_log(y + sqrt(y^2 - 1) */
238 FP_TOS = (PF_FLOAT) fp_log(FP_TOS + (fp_sqrt((FP_TOS * FP_TOS) - 1)));
241 case ID_FP_FALOG: /* ( -- ) ( F: r1 -- r2 ) */
242 FP_TOS = (PF_FLOAT) fp_pow(10.0,FP_TOS);
245 case ID_FP_FASIN: /* ( -- ) ( F: r1 -- r2 ) */
246 FP_TOS = (PF_FLOAT) fp_asin( FP_TOS );
249 case ID_FP_FASINH: /* ( -- ) ( F: r1 -- r2 ) */
250 /* asinh(x) = fp_log(y + fp_sqrt(y^2 + 1) */
251 FP_TOS = (PF_FLOAT) fp_log(FP_TOS + (fp_sqrt((FP_TOS * FP_TOS) + 1)));
254 case ID_FP_FATAN: /* ( -- ) ( F: r1 -- r2 ) */
255 FP_TOS = (PF_FLOAT) fp_atan( FP_TOS );
258 case ID_FP_FATAN2: /* ( -- ) ( F: r1 r2 -- atan(r1/r2) ) */
260 FP_TOS = (PF_FLOAT) fp_atan2( fpTemp, FP_TOS );
263 case ID_FP_FATANH: /* ( -- ) ( F: r1 -- r2 ) */
264 FP_TOS = (PF_FLOAT) (0.5 * fp_log((1 + FP_TOS) / (1 - FP_TOS)));
267 case ID_FP_FCOS: /* ( -- ) ( F: r1 -- r2 ) */
268 FP_TOS = (PF_FLOAT) fp_cos( FP_TOS );
271 case ID_FP_FCOSH: /* ( -- ) ( F: r1 -- r2 ) */
272 FP_TOS = (PF_FLOAT) fp_cosh( FP_TOS );
277 ffFPLiteral( FP_TOS );
280 #endif /* !PF_NO_SHELL */
282 case ID_FP_FLITERAL_P:
285 /* Some wimpy compilers can't handle this! */
286 FP_TOS = *(((PF_FLOAT *)InsPtr)++);
290 fptr = (PF_FLOAT *)InsPtr;
291 FP_TOS = READ_FLOAT_DIC( fptr++ );
292 InsPtr = (cell_t *) fptr;
297 case ID_FP_FLN: /* ( -- ) ( F: r1 -- r2 ) */
298 FP_TOS = (PF_FLOAT) fp_log(FP_TOS);
301 case ID_FP_FLNP1: /* ( -- ) ( F: r1 -- r2 ) */
302 FP_TOS = (PF_FLOAT) (fp_log(FP_TOS) + 1.0);
305 case ID_FP_FLOG: /* ( -- ) ( F: r1 -- r2 ) */
306 FP_TOS = (PF_FLOAT) fp_log10( FP_TOS );
309 case ID_FP_FSIN: /* ( -- ) ( F: r1 -- r2 ) */
310 FP_TOS = (PF_FLOAT) fp_sin( FP_TOS );
313 case ID_FP_FSINCOS: /* ( -- ) ( F: r1 -- r2 r3 ) */
314 M_FP_PUSH((PF_FLOAT) fp_sin(FP_TOS));
315 FP_TOS = (PF_FLOAT) fp_cos(FP_TOS);
318 case ID_FP_FSINH: /* ( -- ) ( F: r1 -- r2 ) */
319 FP_TOS = (PF_FLOAT) fp_sinh( FP_TOS );
322 case ID_FP_FSQRT: /* ( -- ) ( F: r1 -- r2 ) */
323 FP_TOS = (PF_FLOAT) fp_sqrt( FP_TOS );
326 case ID_FP_FTAN: /* ( -- ) ( F: r1 -- r2 ) */
327 FP_TOS = (PF_FLOAT) fp_tan( FP_TOS );
330 case ID_FP_FTANH: /* ( -- ) ( F: r1 -- r2 ) */
331 FP_TOS = (PF_FLOAT) fp_tanh( FP_TOS );
334 case ID_FP_FPICK: /* ( n -- ) ( F: -- f[n] ) */
335 PUSH_FP_TOS; /* push cached floats into RAM */
336 FP_TOS = FP_STKPTR[TOS]; /* 0 FPICK gets top of FP stack */