1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * Linux/PA-RISC Project (http://www.parisc-linux.org/) |
4 | * |
5 | * Floating-point emulation code |
6 | * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org> |
7 | */ |
8 | |
9 | #ifdef __NO_PA_HDRS |
10 | PA header file -- do not include this header file for non-PA builds. |
11 | #endif |
12 | |
13 | /* 32-bit word grabbing functions */ |
14 | #define Sgl_firstword(value) Sall(value) |
15 | #define Sgl_secondword(value) dummy_location |
16 | #define Sgl_thirdword(value) dummy_location |
17 | #define Sgl_fourthword(value) dummy_location |
18 | |
19 | #define Sgl_sign(object) Ssign(object) |
20 | #define Sgl_exponent(object) Sexponent(object) |
21 | #define Sgl_signexponent(object) Ssignexponent(object) |
22 | #define Sgl_mantissa(object) Smantissa(object) |
23 | #define Sgl_exponentmantissa(object) Sexponentmantissa(object) |
24 | #define Sgl_all(object) Sall(object) |
25 | |
26 | /* sgl_and_signs ANDs the sign bits of each argument and puts the result |
27 | * into the first argument. sgl_or_signs ors those same sign bits */ |
28 | #define Sgl_and_signs( src1dst, src2) \ |
29 | Sall(src1dst) = (Sall(src2)|~((unsigned int)1<<31)) & Sall(src1dst) |
30 | #define Sgl_or_signs( src1dst, src2) \ |
31 | Sall(src1dst) = (Sall(src2)&((unsigned int)1<<31)) | Sall(src1dst) |
32 | |
33 | /* The hidden bit is always the low bit of the exponent */ |
34 | #define Sgl_clear_exponent_set_hidden(srcdst) Deposit_sexponent(srcdst,1) |
35 | #define Sgl_clear_signexponent_set_hidden(srcdst) \ |
36 | Deposit_ssignexponent(srcdst,1) |
37 | #define Sgl_clear_sign(srcdst) Sall(srcdst) &= ~((unsigned int)1<<31) |
38 | #define Sgl_clear_signexponent(srcdst) Sall(srcdst) &= 0x007fffff |
39 | |
40 | /* varamount must be less than 32 for the next three functions */ |
41 | #define Sgl_rightshift(srcdst, varamount) \ |
42 | Sall(srcdst) >>= varamount |
43 | #define Sgl_leftshift(srcdst, varamount) \ |
44 | Sall(srcdst) <<= varamount |
45 | #define Sgl_rightshift_exponentmantissa(srcdst, varamount) \ |
46 | Sall(srcdst) = \ |
47 | (Sexponentmantissa(srcdst) >> varamount) | \ |
48 | (Sall(srcdst) & ((unsigned int)1<<31)) |
49 | |
50 | #define Sgl_leftshiftby1_withextent(left,right,result) \ |
51 | Shiftdouble(Sall(left),Extall(right),31,Sall(result)) |
52 | |
53 | #define Sgl_rightshiftby1_withextent(left,right,dst) \ |
54 | Shiftdouble(Sall(left),Extall(right),1,Extall(right)) |
55 | #define Sgl_arithrightshiftby1(srcdst) \ |
56 | Sall(srcdst) = (int)Sall(srcdst) >> 1 |
57 | |
58 | /* Sign extend the sign bit with an integer destination */ |
59 | #define Sgl_signextendedsign(value) Ssignedsign(value) |
60 | |
61 | #define Sgl_isone_hidden(sgl_value) (Shidden(sgl_value)) |
62 | #define Sgl_increment(sgl_value) Sall(sgl_value) += 1 |
63 | #define Sgl_increment_mantissa(sgl_value) \ |
64 | Deposit_smantissa(sgl_value,sgl_value+1) |
65 | #define Sgl_decrement(sgl_value) Sall(sgl_value) -= 1 |
66 | |
67 | #define Sgl_isone_sign(sgl_value) (Is_ssign(sgl_value)!=0) |
68 | #define Sgl_isone_hiddenoverflow(sgl_value) \ |
69 | (Is_shiddenoverflow(sgl_value)!=0) |
70 | #define Sgl_isone_lowmantissa(sgl_value) (Is_slow(sgl_value)!=0) |
71 | #define Sgl_isone_signaling(sgl_value) (Is_ssignaling(sgl_value)!=0) |
72 | #define Sgl_is_signalingnan(sgl_value) (Ssignalingnan(sgl_value)==0x1ff) |
73 | #define Sgl_isnotzero(sgl_value) (Sall(sgl_value)!=0) |
74 | #define Sgl_isnotzero_hiddenhigh7mantissa(sgl_value) \ |
75 | (Shiddenhigh7mantissa(sgl_value)!=0) |
76 | #define Sgl_isnotzero_low4(sgl_value) (Slow4(sgl_value)!=0) |
77 | #define Sgl_isnotzero_exponent(sgl_value) (Sexponent(sgl_value)!=0) |
78 | #define Sgl_isnotzero_mantissa(sgl_value) (Smantissa(sgl_value)!=0) |
79 | #define Sgl_isnotzero_exponentmantissa(sgl_value) \ |
80 | (Sexponentmantissa(sgl_value)!=0) |
81 | #define Sgl_iszero(sgl_value) (Sall(sgl_value)==0) |
82 | #define Sgl_iszero_signaling(sgl_value) (Is_ssignaling(sgl_value)==0) |
83 | #define Sgl_iszero_hidden(sgl_value) (Is_shidden(sgl_value)==0) |
84 | #define Sgl_iszero_hiddenoverflow(sgl_value) \ |
85 | (Is_shiddenoverflow(sgl_value)==0) |
86 | #define Sgl_iszero_hiddenhigh3mantissa(sgl_value) \ |
87 | (Shiddenhigh3mantissa(sgl_value)==0) |
88 | #define Sgl_iszero_hiddenhigh7mantissa(sgl_value) \ |
89 | (Shiddenhigh7mantissa(sgl_value)==0) |
90 | #define Sgl_iszero_sign(sgl_value) (Is_ssign(sgl_value)==0) |
91 | #define Sgl_iszero_exponent(sgl_value) (Sexponent(sgl_value)==0) |
92 | #define Sgl_iszero_mantissa(sgl_value) (Smantissa(sgl_value)==0) |
93 | #define Sgl_iszero_exponentmantissa(sgl_value) \ |
94 | (Sexponentmantissa(sgl_value)==0) |
95 | #define Sgl_isinfinity_exponent(sgl_value) \ |
96 | (Sgl_exponent(sgl_value)==SGL_INFINITY_EXPONENT) |
97 | #define Sgl_isnotinfinity_exponent(sgl_value) \ |
98 | (Sgl_exponent(sgl_value)!=SGL_INFINITY_EXPONENT) |
99 | #define Sgl_isinfinity(sgl_value) \ |
100 | (Sgl_exponent(sgl_value)==SGL_INFINITY_EXPONENT && \ |
101 | Sgl_mantissa(sgl_value)==0) |
102 | #define Sgl_isnan(sgl_value) \ |
103 | (Sgl_exponent(sgl_value)==SGL_INFINITY_EXPONENT && \ |
104 | Sgl_mantissa(sgl_value)!=0) |
105 | #define Sgl_isnotnan(sgl_value) \ |
106 | (Sgl_exponent(sgl_value)!=SGL_INFINITY_EXPONENT || \ |
107 | Sgl_mantissa(sgl_value)==0) |
108 | #define Sgl_islessthan(sgl_op1,sgl_op2) \ |
109 | (Sall(sgl_op1) < Sall(sgl_op2)) |
110 | #define Sgl_isgreaterthan(sgl_op1,sgl_op2) \ |
111 | (Sall(sgl_op1) > Sall(sgl_op2)) |
112 | #define Sgl_isnotlessthan(sgl_op1,sgl_op2) \ |
113 | (Sall(sgl_op1) >= Sall(sgl_op2)) |
114 | #define Sgl_isequal(sgl_op1,sgl_op2) \ |
115 | (Sall(sgl_op1) == Sall(sgl_op2)) |
116 | |
117 | #define Sgl_leftshiftby8(sgl_value) \ |
118 | Sall(sgl_value) <<= 8 |
119 | #define Sgl_leftshiftby4(sgl_value) \ |
120 | Sall(sgl_value) <<= 4 |
121 | #define Sgl_leftshiftby3(sgl_value) \ |
122 | Sall(sgl_value) <<= 3 |
123 | #define Sgl_leftshiftby2(sgl_value) \ |
124 | Sall(sgl_value) <<= 2 |
125 | #define Sgl_leftshiftby1(sgl_value) \ |
126 | Sall(sgl_value) <<= 1 |
127 | #define Sgl_rightshiftby1(sgl_value) \ |
128 | Sall(sgl_value) >>= 1 |
129 | #define Sgl_rightshiftby4(sgl_value) \ |
130 | Sall(sgl_value) >>= 4 |
131 | #define Sgl_rightshiftby8(sgl_value) \ |
132 | Sall(sgl_value) >>= 8 |
133 | |
134 | #define Sgl_ismagnitudeless(signlessleft,signlessright) \ |
135 | /* unsigned int signlessleft, signlessright; */ \ |
136 | (signlessleft < signlessright) |
137 | |
138 | |
139 | #define Sgl_copytoint_exponentmantissa(source,dest) \ |
140 | dest = Sexponentmantissa(source) |
141 | |
142 | /* A quiet NaN has the high mantissa bit clear and at least on other (in this |
143 | * case the adjacent bit) bit set. */ |
144 | #define Sgl_set_quiet(sgl_value) Deposit_shigh2mantissa(sgl_value,1) |
145 | #define Sgl_set_exponent(sgl_value,exp) Deposit_sexponent(sgl_value,exp) |
146 | |
147 | #define Sgl_set_mantissa(dest,value) Deposit_smantissa(dest,value) |
148 | #define Sgl_set_exponentmantissa(dest,value) \ |
149 | Deposit_sexponentmantissa(dest,value) |
150 | |
151 | /* An infinity is represented with the max exponent and a zero mantissa */ |
152 | #define Sgl_setinfinity_exponent(sgl_value) \ |
153 | Deposit_sexponent(sgl_value,SGL_INFINITY_EXPONENT) |
154 | #define Sgl_setinfinity_exponentmantissa(sgl_value) \ |
155 | Deposit_sexponentmantissa(sgl_value, \ |
156 | (SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH)))) |
157 | #define Sgl_setinfinitypositive(sgl_value) \ |
158 | Sall(sgl_value) = (SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH))) |
159 | #define Sgl_setinfinitynegative(sgl_value) \ |
160 | Sall(sgl_value) = (SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH))) \ |
161 | | ((unsigned int)1<<31) |
162 | #define Sgl_setinfinity(sgl_value,sign) \ |
163 | Sall(sgl_value) = (SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH))) | \ |
164 | ((unsigned int)sign << 31) |
165 | #define Sgl_sethigh4bits(sgl_value, extsign) \ |
166 | Deposit_shigh4(sgl_value,extsign) |
167 | #define Sgl_set_sign(sgl_value,sign) Deposit_ssign(sgl_value,sign) |
168 | #define Sgl_invert_sign(sgl_value) \ |
169 | Deposit_ssign(sgl_value,~Ssign(sgl_value)) |
170 | #define Sgl_setone_sign(sgl_value) Deposit_ssign(sgl_value,1) |
171 | #define Sgl_setone_lowmantissa(sgl_value) Deposit_slow(sgl_value,1) |
172 | #define Sgl_setzero_sign(sgl_value) Sall(sgl_value) &= 0x7fffffff |
173 | #define Sgl_setzero_exponent(sgl_value) Sall(sgl_value) &= 0x807fffff |
174 | #define Sgl_setzero_mantissa(sgl_value) Sall(sgl_value) &= 0xff800000 |
175 | #define Sgl_setzero_exponentmantissa(sgl_value) Sall(sgl_value) &= 0x80000000 |
176 | #define Sgl_setzero(sgl_value) Sall(sgl_value) = 0 |
177 | #define Sgl_setnegativezero(sgl_value) Sall(sgl_value) = (unsigned int)1 << 31 |
178 | |
179 | /* Use following macro for both overflow & underflow conditions */ |
180 | #define ovfl - |
181 | #define unfl + |
182 | #define Sgl_setwrapped_exponent(sgl_value,exponent,op) \ |
183 | Deposit_sexponent(sgl_value,(exponent op SGL_WRAP)) |
184 | |
185 | #define Sgl_setlargestpositive(sgl_value) \ |
186 | Sall(sgl_value) = ((SGL_EMAX+SGL_BIAS) << (32-(1+SGL_EXP_LENGTH))) \ |
187 | | ((1<<(32-(1+SGL_EXP_LENGTH))) - 1 ) |
188 | #define Sgl_setlargestnegative(sgl_value) \ |
189 | Sall(sgl_value) = ((SGL_EMAX+SGL_BIAS) << (32-(1+SGL_EXP_LENGTH))) \ |
190 | | ((1<<(32-(1+SGL_EXP_LENGTH))) - 1 ) \ |
191 | | ((unsigned int)1<<31) |
192 | |
193 | #define Sgl_setnegativeinfinity(sgl_value) \ |
194 | Sall(sgl_value) = \ |
195 | ((1<<SGL_EXP_LENGTH) | SGL_INFINITY_EXPONENT) << (32-(1+SGL_EXP_LENGTH)) |
196 | #define Sgl_setlargest(sgl_value,sign) \ |
197 | Sall(sgl_value) = (unsigned int)sign << 31 | \ |
198 | (((SGL_EMAX+SGL_BIAS) << (32-(1+SGL_EXP_LENGTH))) \ |
199 | | ((1 << (32-(1+SGL_EXP_LENGTH))) - 1 )) |
200 | #define Sgl_setlargest_exponentmantissa(sgl_value) \ |
201 | Sall(sgl_value) = Sall(sgl_value) & ((unsigned int)1<<31) | \ |
202 | (((SGL_EMAX+SGL_BIAS) << (32-(1+SGL_EXP_LENGTH))) \ |
203 | | ((1 << (32-(1+SGL_EXP_LENGTH))) - 1 )) |
204 | |
205 | /* The high bit is always zero so arithmetic or logical shifts will work. */ |
206 | #define Sgl_right_align(srcdst,shift,extent) \ |
207 | /* sgl_floating_point srcdst; int shift; extension extent */ \ |
208 | if (shift < 32) { \ |
209 | Extall(extent) = Sall(srcdst) << (32-(shift)); \ |
210 | Sall(srcdst) >>= shift; \ |
211 | } \ |
212 | else { \ |
213 | Extall(extent) = Sall(srcdst); \ |
214 | Sall(srcdst) = 0; \ |
215 | } |
216 | #define Sgl_hiddenhigh3mantissa(sgl_value) Shiddenhigh3mantissa(sgl_value) |
217 | #define Sgl_hidden(sgl_value) Shidden(sgl_value) |
218 | #define Sgl_lowmantissa(sgl_value) Slow(sgl_value) |
219 | |
220 | /* The left argument is never smaller than the right argument */ |
221 | #define Sgl_subtract(sgl_left,sgl_right,sgl_result) \ |
222 | Sall(sgl_result) = Sall(sgl_left) - Sall(sgl_right) |
223 | |
224 | /* Subtract right augmented with extension from left augmented with zeros and |
225 | * store into result and extension. */ |
226 | #define Sgl_subtract_withextension(left,right,extent,result) \ |
227 | /* sgl_floating_point left,right,result; extension extent */ \ |
228 | Sgl_subtract(left,right,result); \ |
229 | if((Extall(extent) = 0-Extall(extent))) \ |
230 | Sall(result) = Sall(result)-1 |
231 | |
232 | #define Sgl_addition(sgl_left,sgl_right,sgl_result) \ |
233 | Sall(sgl_result) = Sall(sgl_left) + Sall(sgl_right) |
234 | |
235 | #define Sgl_xortointp1(left,right,result) \ |
236 | result = Sall(left) XOR Sall(right); |
237 | |
238 | #define Sgl_xorfromintp1(left,right,result) \ |
239 | Sall(result) = left XOR Sall(right) |
240 | |
241 | /* Need to Initialize */ |
242 | #define Sgl_makequietnan(dest) \ |
243 | Sall(dest) = ((SGL_EMAX+SGL_BIAS)+1)<< (32-(1+SGL_EXP_LENGTH)) \ |
244 | | (1<<(32-(1+SGL_EXP_LENGTH+2))) |
245 | #define Sgl_makesignalingnan(dest) \ |
246 | Sall(dest) = ((SGL_EMAX+SGL_BIAS)+1)<< (32-(1+SGL_EXP_LENGTH)) \ |
247 | | (1<<(32-(1+SGL_EXP_LENGTH+1))) |
248 | |
249 | #define Sgl_normalize(sgl_opnd,exponent) \ |
250 | while(Sgl_iszero_hiddenhigh7mantissa(sgl_opnd)) { \ |
251 | Sgl_leftshiftby8(sgl_opnd); \ |
252 | exponent -= 8; \ |
253 | } \ |
254 | if(Sgl_iszero_hiddenhigh3mantissa(sgl_opnd)) { \ |
255 | Sgl_leftshiftby4(sgl_opnd); \ |
256 | exponent -= 4; \ |
257 | } \ |
258 | while(Sgl_iszero_hidden(sgl_opnd)) { \ |
259 | Sgl_leftshiftby1(sgl_opnd); \ |
260 | exponent -= 1; \ |
261 | } |
262 | |
263 | #define Sgl_setoverflow(sgl_opnd) \ |
264 | /* set result to infinity or largest number */ \ |
265 | switch (Rounding_mode()) { \ |
266 | case ROUNDPLUS: \ |
267 | if (Sgl_isone_sign(sgl_opnd)) { \ |
268 | Sgl_setlargestnegative(sgl_opnd); \ |
269 | } \ |
270 | else { \ |
271 | Sgl_setinfinitypositive(sgl_opnd); \ |
272 | } \ |
273 | break; \ |
274 | case ROUNDMINUS: \ |
275 | if (Sgl_iszero_sign(sgl_opnd)) { \ |
276 | Sgl_setlargestpositive(sgl_opnd); \ |
277 | } \ |
278 | else { \ |
279 | Sgl_setinfinitynegative(sgl_opnd); \ |
280 | } \ |
281 | break; \ |
282 | case ROUNDNEAREST: \ |
283 | Sgl_setinfinity_exponentmantissa(sgl_opnd); \ |
284 | break; \ |
285 | case ROUNDZERO: \ |
286 | Sgl_setlargest_exponentmantissa(sgl_opnd); \ |
287 | } |
288 | |
289 | #define Sgl_denormalize(opnd,exponent,guard,sticky,inexact) \ |
290 | Sgl_clear_signexponent_set_hidden(opnd); \ |
291 | if (exponent >= (1 - SGL_P)) { \ |
292 | guard = (Sall(opnd) >> -exponent) & 1; \ |
293 | if (exponent < 0) sticky |= Sall(opnd) << (32+exponent); \ |
294 | inexact = guard | sticky; \ |
295 | Sall(opnd) >>= (1-exponent); \ |
296 | } \ |
297 | else { \ |
298 | guard = 0; \ |
299 | sticky |= Sall(opnd); \ |
300 | inexact = sticky; \ |
301 | Sgl_setzero(opnd); \ |
302 | } |
303 | |
304 | /* |
305 | * The fused multiply add instructions requires a single extended format, |
306 | * with 48 bits of mantissa. |
307 | */ |
308 | #define SGLEXT_THRESHOLD 48 |
309 | |
310 | #define Sglext_setzero(valA,valB) \ |
311 | Sextallp1(valA) = 0; Sextallp2(valB) = 0 |
312 | |
313 | #define Sglext_isnotzero_mantissap2(valB) (Sextallp2(valB)!=0) |
314 | #define Sglext_isone_lowp1(val) (Sextlowp1(val)!=0) |
315 | #define Sglext_isone_highp2(val) (Sexthighp2(val)!=0) |
316 | #define Sglext_isnotzero_low31p2(val) (Sextlow31p2(val)!=0) |
317 | #define Sglext_iszero(valA,valB) (Sextallp1(valA)==0 && Sextallp2(valB)==0) |
318 | |
319 | #define Sgl_copytoptr(src,destptr) *destptr = src |
320 | #define Sgl_copyfromptr(srcptr,dest) dest = *srcptr |
321 | #define Sglext_copy(srca,srcb,desta,destb) \ |
322 | Sextallp1(desta) = Sextallp1(srca); \ |
323 | Sextallp2(destb) = Sextallp2(srcb) |
324 | #define Sgl_copyto_sglext(src1,dest1,dest2) \ |
325 | Sextallp1(dest1) = Sall(src1); Sextallp2(dest2) = 0 |
326 | |
327 | #define Sglext_swap_lower(leftp2,rightp2) \ |
328 | Sextallp2(leftp2) = Sextallp2(leftp2) XOR Sextallp2(rightp2); \ |
329 | Sextallp2(rightp2) = Sextallp2(leftp2) XOR Sextallp2(rightp2); \ |
330 | Sextallp2(leftp2) = Sextallp2(leftp2) XOR Sextallp2(rightp2) |
331 | |
332 | #define Sglext_setone_lowmantissap2(value) Deposit_dlowp2(value,1) |
333 | |
334 | /* The high bit is always zero so arithmetic or logical shifts will work. */ |
335 | #define Sglext_right_align(srcdstA,srcdstB,shift) \ |
336 | {int shiftamt, sticky; \ |
337 | shiftamt = shift % 32; \ |
338 | sticky = 0; \ |
339 | switch (shift/32) { \ |
340 | case 0: if (shiftamt > 0) { \ |
341 | sticky = Sextallp2(srcdstB) << 32 - (shiftamt); \ |
342 | Variable_shift_double(Sextallp1(srcdstA), \ |
343 | Sextallp2(srcdstB),shiftamt,Sextallp2(srcdstB)); \ |
344 | Sextallp1(srcdstA) >>= shiftamt; \ |
345 | } \ |
346 | break; \ |
347 | case 1: if (shiftamt > 0) { \ |
348 | sticky = (Sextallp1(srcdstA) << 32 - (shiftamt)) | \ |
349 | Sextallp2(srcdstB); \ |
350 | } \ |
351 | else { \ |
352 | sticky = Sextallp2(srcdstB); \ |
353 | } \ |
354 | Sextallp2(srcdstB) = Sextallp1(srcdstA) >> shiftamt; \ |
355 | Sextallp1(srcdstA) = 0; \ |
356 | break; \ |
357 | } \ |
358 | if (sticky) Sglext_setone_lowmantissap2(srcdstB); \ |
359 | } |
360 | |
361 | /* The left argument is never smaller than the right argument */ |
362 | #define Sglext_subtract(lefta,leftb,righta,rightb,resulta,resultb) \ |
363 | if( Sextallp2(rightb) > Sextallp2(leftb) ) Sextallp1(lefta)--; \ |
364 | Sextallp2(resultb) = Sextallp2(leftb) - Sextallp2(rightb); \ |
365 | Sextallp1(resulta) = Sextallp1(lefta) - Sextallp1(righta) |
366 | |
367 | #define Sglext_addition(lefta,leftb,righta,rightb,resulta,resultb) \ |
368 | /* If the sum of the low words is less than either source, then \ |
369 | * an overflow into the next word occurred. */ \ |
370 | if ((Sextallp2(resultb) = Sextallp2(leftb)+Sextallp2(rightb)) < \ |
371 | Sextallp2(rightb)) \ |
372 | Sextallp1(resulta) = Sextallp1(lefta)+Sextallp1(righta)+1; \ |
373 | else Sextallp1(resulta) = Sextallp1(lefta)+Sextallp1(righta) |
374 | |
375 | |
376 | #define Sglext_arithrightshiftby1(srcdstA,srcdstB) \ |
377 | Shiftdouble(Sextallp1(srcdstA),Sextallp2(srcdstB),1,Sextallp2(srcdstB)); \ |
378 | Sextallp1(srcdstA) = (int)Sextallp1(srcdstA) >> 1 |
379 | |
380 | #define Sglext_leftshiftby8(valA,valB) \ |
381 | Shiftdouble(Sextallp1(valA),Sextallp2(valB),24,Sextallp1(valA)); \ |
382 | Sextallp2(valB) <<= 8 |
383 | #define Sglext_leftshiftby4(valA,valB) \ |
384 | Shiftdouble(Sextallp1(valA),Sextallp2(valB),28,Sextallp1(valA)); \ |
385 | Sextallp2(valB) <<= 4 |
386 | #define Sglext_leftshiftby3(valA,valB) \ |
387 | Shiftdouble(Sextallp1(valA),Sextallp2(valB),29,Sextallp1(valA)); \ |
388 | Sextallp2(valB) <<= 3 |
389 | #define Sglext_leftshiftby2(valA,valB) \ |
390 | Shiftdouble(Sextallp1(valA),Sextallp2(valB),30,Sextallp1(valA)); \ |
391 | Sextallp2(valB) <<= 2 |
392 | #define Sglext_leftshiftby1(valA,valB) \ |
393 | Shiftdouble(Sextallp1(valA),Sextallp2(valB),31,Sextallp1(valA)); \ |
394 | Sextallp2(valB) <<= 1 |
395 | |
396 | #define Sglext_rightshiftby4(valueA,valueB) \ |
397 | Shiftdouble(Sextallp1(valueA),Sextallp2(valueB),4,Sextallp2(valueB)); \ |
398 | Sextallp1(valueA) >>= 4 |
399 | #define Sglext_rightshiftby3(valueA,valueB) \ |
400 | Shiftdouble(Sextallp1(valueA),Sextallp2(valueB),3,Sextallp2(valueB)); \ |
401 | Sextallp1(valueA) >>= 3 |
402 | #define Sglext_rightshiftby1(valueA,valueB) \ |
403 | Shiftdouble(Sextallp1(valueA),Sextallp2(valueB),1,Sextallp2(valueB)); \ |
404 | Sextallp1(valueA) >>= 1 |
405 | |
406 | #define Sglext_xortointp1(left,right,result) Sgl_xortointp1(left,right,result) |
407 | #define Sglext_xorfromintp1(left,right,result) \ |
408 | Sgl_xorfromintp1(left,right,result) |
409 | #define Sglext_copytoint_exponentmantissa(src,dest) \ |
410 | Sgl_copytoint_exponentmantissa(src,dest) |
411 | #define Sglext_ismagnitudeless(signlessleft,signlessright) \ |
412 | Sgl_ismagnitudeless(signlessleft,signlessright) |
413 | |
414 | #define Sglext_set_sign(dbl_value,sign) Sgl_set_sign(dbl_value,sign) |
415 | #define Sglext_clear_signexponent_set_hidden(srcdst) \ |
416 | Sgl_clear_signexponent_set_hidden(srcdst) |
417 | #define Sglext_clear_signexponent(srcdst) Sgl_clear_signexponent(srcdst) |
418 | #define Sglext_clear_sign(srcdst) Sgl_clear_sign(srcdst) |
419 | #define Sglext_isone_hidden(dbl_value) Sgl_isone_hidden(dbl_value) |
420 | |
421 | #define Sglext_denormalize(opndp1,opndp2,exponent,is_tiny) \ |
422 | {int sticky; \ |
423 | is_tiny = TRUE; \ |
424 | if (exponent == 0 && Sextallp2(opndp2)) { \ |
425 | switch (Rounding_mode()) { \ |
426 | case ROUNDPLUS: \ |
427 | if (Sgl_iszero_sign(opndp1)) \ |
428 | if (Sgl_isone_hiddenoverflow(opndp1 + 1)) \ |
429 | is_tiny = FALSE; \ |
430 | break; \ |
431 | case ROUNDMINUS: \ |
432 | if (Sgl_isone_sign(opndp1)) { \ |
433 | if (Sgl_isone_hiddenoverflow(opndp1 + 1)) \ |
434 | is_tiny = FALSE; \ |
435 | } \ |
436 | break; \ |
437 | case ROUNDNEAREST: \ |
438 | if (Sglext_isone_highp2(opndp2) && \ |
439 | (Sglext_isone_lowp1(opndp1) || \ |
440 | Sglext_isnotzero_low31p2(opndp2))) \ |
441 | if (Sgl_isone_hiddenoverflow(opndp1 + 1)) \ |
442 | is_tiny = FALSE; \ |
443 | break; \ |
444 | } \ |
445 | } \ |
446 | Sglext_clear_signexponent_set_hidden(opndp1); \ |
447 | if (exponent >= (1-DBL_P)) { \ |
448 | if (exponent >= -31) { \ |
449 | if (exponent > -31) { \ |
450 | sticky = Sextallp2(opndp2) << 31+exponent; \ |
451 | Variable_shift_double(opndp1,opndp2,1-exponent,opndp2); \ |
452 | Sextallp1(opndp1) >>= 1-exponent; \ |
453 | } \ |
454 | else { \ |
455 | sticky = Sextallp2(opndp2); \ |
456 | Sextallp2(opndp2) = Sextallp1(opndp1); \ |
457 | Sextallp1(opndp1) = 0; \ |
458 | } \ |
459 | } \ |
460 | else { \ |
461 | sticky = (Sextallp1(opndp1) << 31+exponent) | \ |
462 | Sextallp2(opndp2); \ |
463 | Sextallp2(opndp2) = Sextallp1(opndp1) >> -31-exponent; \ |
464 | Sextallp1(opndp1) = 0; \ |
465 | } \ |
466 | } \ |
467 | else { \ |
468 | sticky = Sextallp1(opndp1) | Sextallp2(opndp2); \ |
469 | Sglext_setzero(opndp1,opndp2); \ |
470 | } \ |
471 | if (sticky) Sglext_setone_lowmantissap2(opndp2); \ |
472 | exponent = 0; \ |
473 | } |
474 | |