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, Devid Rosenboom
11 ** The pForth software code is dedicated to the public domain,
12 ** and any third party may reproduce, distribute and modify
13 ** the pForth software code or any derivative works thereof
14 ** without any compensation or license. The pForth software
15 ** code is provided on an "as is" basis without any warranty
16 ** of any kind, including, without limitation, the implied
17 ** warranties of merchantability and fitness for a particular
18 ** purpose and their equivalents under the laws of any jurisdiction.
20 ****************************************************************
22 ***************************************************************/
26 #define FP_DHI1 (((PF_FLOAT)0x40000000)*4.0)
28 case ID_FP_D_TO_F: /* ( dlo dhi -- ) ( F: -- r ) */
30 Scratch = M_POP; /* dlo */
31 DBUG(("dlo = 0x%8x , ", Scratch));
32 DBUG(("dhi = 0x%8x\n", TOS));
34 if( ((TOS == 0) && (Scratch >= 0)) ||
35 ((TOS == -1) && (Scratch < 0)))
37 /* <= 32 bit precision. */
38 FP_TOS = ((PF_FLOAT) Scratch); /* Convert dlo and push on FP stack. */
40 else /* > 32 bit precision. */
42 fpTemp = ((PF_FLOAT) TOS); /* dhi */
44 fpScratch = ( (PF_FLOAT) ((unsigned int)Scratch) ); /* Convert TOS and push on FP stack. */
45 FP_TOS = fpTemp + fpScratch;
48 /* printf("d2f = %g\n", FP_TOS); */
51 case ID_FP_FSTORE: /* ( addr -- ) ( F: r -- ) */
\r
52 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))
\r
53 if( IN_CODE_DIC(TOS) )
\r
55 WRITE_FLOAT_DIC( (PF_FLOAT *) TOS, FP_TOS );
\r
59 *((PF_FLOAT *) TOS) = FP_TOS;
\r
62 *((PF_FLOAT *) TOS) = FP_TOS;
\r
64 M_FP_DROP; /* drop FP value */
65 M_DROP; /* drop addr */
68 case ID_FP_FTIMES: /* ( F: r1 r2 -- r1*r2 ) */
69 FP_TOS = M_FP_POP * FP_TOS;
72 case ID_FP_FPLUS: /* ( F: r1 r2 -- r1+r2 ) */
73 FP_TOS = M_FP_POP + FP_TOS;
76 case ID_FP_FMINUS: /* ( F: r1 r2 -- r1-r2 ) */
77 FP_TOS = M_FP_POP - FP_TOS;
80 case ID_FP_FSLASH: /* ( F: r1 r2 -- r1/r2 ) */
81 FP_TOS = M_FP_POP / FP_TOS;
84 case ID_FP_F_ZERO_LESS_THAN: /* ( -- flag ) ( F: r -- ) */
86 TOS = (FP_TOS < 0.0) ? FTRUE : FFALSE ;
90 case ID_FP_F_ZERO_EQUALS: /* ( -- flag ) ( F: r -- ) */
92 TOS = (FP_TOS == 0.0) ? FTRUE : FFALSE ;
96 case ID_FP_F_LESS_THAN: /* ( -- flag ) ( F: r1 r2 -- ) */
98 TOS = (M_FP_POP < FP_TOS) ? FTRUE : FFALSE ;
102 case ID_FP_F_TO_D: /* ( -- dlo dhi) ( F: r -- ) */
103 /* printf("f2d = %g\n", FP_TOS); */
108 /* Convert absolute value, then negate D if negative. */
109 PUSH_TOS; /* Save old TOS */
112 ifNeg = (fpTemp < 0.0);
115 fpTemp = 0.0 - fpTemp;
117 fpScratch = fpTemp / FP_DHI1;
118 /* printf("f2d - fpScratch = %g\n", fpScratch); */
119 dhi = (int32) fpScratch; /* dhi */
120 fpScratch = ((PF_FLOAT) dhi) * FP_DHI1;
121 /* printf("f2d - , dhi = 0x%x, fpScratch = %g\n", dhi, fpScratch); */
123 fpTemp = fpTemp - fpScratch; /* Remainder */
124 dlo = (uint32) fpTemp;
125 /* printf("f2d - , dlo = 0x%x, fpTemp = %g\n", dlo, fpTemp); */
131 /* Push onto stack. */
138 case ID_FP_FFETCH: /* ( addr -- ) ( F: -- r ) */
140 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))
\r
141 if( IN_CODE_DIC(TOS) )
\r
143 FP_TOS = READ_FLOAT_DIC( (PF_FLOAT *) TOS );
\r
147 FP_TOS = *((PF_FLOAT *) TOS);
\r
150 FP_TOS = *((PF_FLOAT *) TOS);
\r
155 case ID_FP_FDEPTH: /* ( -- n ) ( F: -- ) */
157 /* Add 1 to account for FP_TOS in cached in register. */
158 TOS = (( M_FP_SPZERO - FP_STKPTR) + 1);
161 case ID_FP_FDROP: /* ( -- ) ( F: r -- ) */
165 case ID_FP_FDUP: /* ( -- ) ( F: r -- r r ) */
169 case ID_FP_FLOAT_PLUS: /* ( addr1 -- addr2 ) ( F: -- ) */
170 TOS = TOS + sizeof(PF_FLOAT);
173 case ID_FP_FLOATS: /* ( n -- size ) ( F: -- ) */
174 TOS = TOS * sizeof(PF_FLOAT);
177 case ID_FP_FLOOR: /* ( -- ) ( F: r1 -- r2 ) */
178 FP_TOS = (PF_FLOAT) fp_floor( FP_TOS );
181 case ID_FP_FMAX: /* ( -- ) ( F: r1 r2 -- r3 ) */
182 fpScratch = M_FP_POP;
183 FP_TOS = ( FP_TOS > fpScratch ) ? FP_TOS : fpScratch ;
186 case ID_FP_FMIN: /* ( -- ) ( F: r1 r2 -- r3 ) */
187 fpScratch = M_FP_POP;
188 FP_TOS = ( FP_TOS < fpScratch ) ? FP_TOS : fpScratch ;
195 case ID_FP_FOVER: /* ( -- ) ( F: r1 r2 -- r1 r2 r1 ) */
197 FP_TOS = M_FP_STACK(1);
200 case ID_FP_FROT: /* ( -- ) ( F: r1 r2 r3 -- r2 r3 r1 ) */
201 fpScratch = M_FP_POP; /* r2 */
202 fpTemp = M_FP_POP; /* r1 */
203 M_FP_PUSH( fpScratch ); /* r2 */
204 PUSH_FP_TOS; /* r3 */
205 FP_TOS = fpTemp; /* r1 */
209 ERR("\nID_FP_FROUND - Not Yet!! FIXME\n");
212 case ID_FP_FSWAP: /* ( -- ) ( F: r1 r2 -- r2 r1 ) */
215 *FP_STKPTR = fpScratch;
218 case ID_FP_FSTAR_STAR: /* ( -- ) ( F: r1 r2 -- r1^r2 ) */
219 fpScratch = M_FP_POP;
220 FP_TOS = (PF_FLOAT) fp_pow(fpScratch, FP_TOS);
223 case ID_FP_FABS: /* ( -- ) ( F: r1 -- r2 ) */
224 FP_TOS = (PF_FLOAT) fp_fabs( FP_TOS );
227 case ID_FP_FACOS: /* ( -- ) ( F: r1 -- r2 ) */
228 FP_TOS = (PF_FLOAT) fp_acos( FP_TOS );
231 case ID_FP_FACOSH: /* ( -- ) ( F: r1 -- r2 ) */
232 /* fp_acosh(x) = fp_log(y + sqrt(y^2 - 1) */
233 FP_TOS = (PF_FLOAT) fp_log(FP_TOS + (fp_sqrt((FP_TOS * FP_TOS) - 1)));
236 case ID_FP_FALOG: /* ( -- ) ( F: r1 -- r2 ) */
237 FP_TOS = (PF_FLOAT) fp_pow(10.0,FP_TOS);
240 case ID_FP_FASIN: /* ( -- ) ( F: r1 -- r2 ) */
241 FP_TOS = (PF_FLOAT) fp_asin( FP_TOS );
244 case ID_FP_FASINH: /* ( -- ) ( F: r1 -- r2 ) */
245 /* asinh(x) = fp_log(y + fp_sqrt(y^2 + 1) */
246 FP_TOS = (PF_FLOAT) fp_log(FP_TOS + (fp_sqrt((FP_TOS * FP_TOS) + 1)));
249 case ID_FP_FATAN: /* ( -- ) ( F: r1 -- r2 ) */
250 FP_TOS = (PF_FLOAT) fp_atan( FP_TOS );
253 case ID_FP_FATAN2: /* ( -- ) ( F: r1 r2 -- atan(r1/r2) ) */
255 FP_TOS = (PF_FLOAT) fp_atan2( fpTemp, FP_TOS );
258 case ID_FP_FATANH: /* ( -- ) ( F: r1 -- r2 ) */
259 FP_TOS = (PF_FLOAT) (0.5 * fp_log((1 + FP_TOS) / (1 - FP_TOS)));
262 case ID_FP_FCOS: /* ( -- ) ( F: r1 -- r2 ) */
263 FP_TOS = (PF_FLOAT) fp_cos( FP_TOS );
266 case ID_FP_FCOSH: /* ( -- ) ( F: r1 -- r2 ) */
267 FP_TOS = (PF_FLOAT) fp_cosh( FP_TOS );
272 ffFPLiteral( FP_TOS );
275 #endif /* !PF_NO_SHELL */
277 case ID_FP_FLITERAL_P:
280 /* Some wimpy compilers can't handle this! */
281 FP_TOS = *(((PF_FLOAT *)InsPtr)++);
285 fptr = (PF_FLOAT *)InsPtr;
\r
286 FP_TOS = READ_FLOAT_DIC( fptr++ );
287 InsPtr = (cell *) fptr;
292 case ID_FP_FLN: /* ( -- ) ( F: r1 -- r2 ) */
293 FP_TOS = (PF_FLOAT) fp_log(FP_TOS);
296 case ID_FP_FLNP1: /* ( -- ) ( F: r1 -- r2 ) */
297 FP_TOS = (PF_FLOAT) (fp_log(FP_TOS) + 1.0);
300 case ID_FP_FLOG: /* ( -- ) ( F: r1 -- r2 ) */
301 FP_TOS = (PF_FLOAT) fp_log10( FP_TOS );
304 case ID_FP_FSIN: /* ( -- ) ( F: r1 -- r2 ) */
305 FP_TOS = (PF_FLOAT) fp_sin( FP_TOS );
308 case ID_FP_FSINCOS: /* ( -- ) ( F: r1 -- r2 r3 ) */
309 M_FP_PUSH((PF_FLOAT) fp_sin(FP_TOS));
310 FP_TOS = (PF_FLOAT) fp_cos(FP_TOS);
313 case ID_FP_FSINH: /* ( -- ) ( F: r1 -- r2 ) */
314 FP_TOS = (PF_FLOAT) fp_sinh( FP_TOS );
317 case ID_FP_FSQRT: /* ( -- ) ( F: r1 -- r2 ) */
318 FP_TOS = (PF_FLOAT) fp_sqrt( FP_TOS );
321 case ID_FP_FTAN: /* ( -- ) ( F: r1 -- r2 ) */
322 FP_TOS = (PF_FLOAT) fp_tan( FP_TOS );
325 case ID_FP_FTANH: /* ( -- ) ( F: r1 -- r2 ) */
326 FP_TOS = (PF_FLOAT) fp_tanh( FP_TOS );
329 case ID_FP_FPICK: /* ( n -- ) ( F: -- f[n] ) */
330 PUSH_FP_TOS; /* push cached floats into RAM */
331 FP_TOS = FP_STKPTR[TOS]; /* 0 FPICK gets top of FP stack */