/* Copyright (c) 2014, Intel Corporation All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * Neither the name of Intel Corporation nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /******************************************************************************/ // ALGORITHM DESCRIPTION // --------------------- // // Description: // Let K = 64 (table size). // // Four sub-domains: // 1. |x| < 1/(2*K) // expm1(x) ~ P(x) // 2. 1/(2*K) <= |x| <= 56*log(2) // x x/log(2) n // e - 1 = 2 = 2 * T[j] * (1 + P(y)) - 1 // 3. 56*log(2) < x < MAX_LOG // x x x/log(2) n // e - 1 ~ e = 2 = 2 * T[j] * (1 + P(y)) // 4. x < -56*log(2) // x x // e - 1 = -1 + e ~ -1 // where // x = m*log(2)/K + y, y in [-log(2)/K..log(2)/K] // m = n*K + j, m,n,j - signed integer, j in [-K/2..K/2] // j/K // values of 2 are tabulated as T[j] = T_hi[j] ( 1 + T_lo[j]). // // P(y) is a minimax polynomial approximation of exp(x)-1 // on small interval [-log(2)/K..log(2)/K] (were calculated by Maple V). // // In case 3, to avoid problems with arithmetic overflow and underflow, // n n1 n2 // value of 2 is safely computed as 2 * 2 where n1 in [-BIAS/2..BIAS/2] // and BIAS is a value of exponent bias. // // Special cases: // expm1(NaN) is NaN // expm1(+INF) is +INF // expm1(-INF) is -1 // expm1(x) is x for subnormals // for finite argument, only expm1(0)=0 is exact. // For IEEE double // if x > 709.782712893383973096 then expm1(x) overflow // /******************************************************************************/ #include # -- Begin static_func .text .align __bionic_asm_align .type static_func, @function static_func: ..B1.1: call ..L2 ..L2: popl %eax lea _GLOBAL_OFFSET_TABLE_+[. - ..L2](%eax), %eax lea static_const_table@GOTOFF(%eax), %eax ret .size static_func,.-static_func # -- End static_func # -- Begin expm1 ENTRY(expm1) # parameter 1: 8 + %ebp ..B2.1: ..B2.2: pushl %ebp movl %esp, %ebp subl $120, %esp movl %ebx, 64(%esp) call static_func movl %eax, %ebx movsd 128(%esp), %xmm0 unpcklpd %xmm0, %xmm0 movapd 64(%ebx), %xmm1 movapd 48(%ebx), %xmm6 movapd 80(%ebx), %xmm2 movapd 96(%ebx), %xmm3 pextrw $3, %xmm0, %eax andl $32767, %eax movl $16527, %edx subl %eax, %edx subl $16304, %eax orl %eax, %edx cmpl $-2147483648, %edx jae .L_2TAG_PACKET_0.0.2 mulpd %xmm0, %xmm1 addpd %xmm6, %xmm1 movapd %xmm1, %xmm7 subpd %xmm6, %xmm1 mulpd %xmm1, %xmm2 movapd 112(%ebx), %xmm4 mulpd %xmm1, %xmm3 movapd 128(%ebx), %xmm5 subpd %xmm2, %xmm0 movd %xmm7, %eax movl %eax, %ecx andl $63, %ecx shll $4, %ecx sarl $6, %eax movl %eax, %edx subpd %xmm3, %xmm0 movapd 160(%ebx,%ecx), %xmm2 movsd 144(%ebx), %xmm3 mulpd %xmm0, %xmm4 movapd %xmm0, %xmm1 mulpd %xmm0, %xmm0 mulsd %xmm0, %xmm3 addpd %xmm4, %xmm5 mulsd %xmm0, %xmm0 movapd %xmm2, %xmm4 unpckhpd %xmm2, %xmm2 movdqa 16(%ebx), %xmm6 pand %xmm6, %xmm7 movdqa 32(%ebx), %xmm6 paddq %xmm6, %xmm7 psllq $46, %xmm7 mulsd %xmm0, %xmm3 mulpd %xmm5, %xmm0 addl $894, %edx cmpl $1916, %edx ja .L_2TAG_PACKET_1.0.2 addsd %xmm3, %xmm0 xorpd %xmm3, %xmm3 movl $16368, %eax pinsrw $3, %eax, %xmm3 orpd %xmm7, %xmm2 mulsd %xmm4, %xmm7 movapd %xmm3, %xmm6 addsd %xmm1, %xmm3 pextrw $3, %xmm2, %edx pshufd $238, %xmm0, %xmm5 psrlq $38, %xmm3 psllq $38, %xmm3 movapd %xmm2, %xmm4 subsd %xmm3, %xmm6 addsd %xmm5, %xmm0 addsd %xmm6, %xmm1 addsd %xmm7, %xmm4 mulsd %xmm3, %xmm7 mulsd %xmm2, %xmm3 xorpd %xmm5, %xmm5 movl $16368, %eax pinsrw $3, %eax, %xmm5 addsd %xmm1, %xmm0 movl $17184, %ecx subl %edx, %ecx subl $16256, %edx orl %edx, %ecx jl .L_2TAG_PACKET_2.0.2 mulsd %xmm4, %xmm0 subsd %xmm5, %xmm3 addsd %xmm7, %xmm0 addsd %xmm3, %xmm0 .L_2TAG_PACKET_3.0.2: jmp .L_2TAG_PACKET_4.0.2 .L_2TAG_PACKET_2.0.2: cmpl $0, %edx jl .L_2TAG_PACKET_5.0.2 mulsd %xmm4, %xmm0 subsd %xmm5, %xmm7 addsd %xmm7, %xmm0 addsd %xmm3, %xmm0 jmp .L_2TAG_PACKET_3.0.2 .L_2TAG_PACKET_5.0.2: mulsd %xmm4, %xmm0 addsd %xmm7, %xmm0 addsd %xmm3, %xmm0 subsd %xmm5, %xmm0 jmp .L_2TAG_PACKET_3.0.2 .L_2TAG_PACKET_1.0.2: movl 132(%esp), %ecx addsd %xmm0, %xmm1 unpckhpd %xmm0, %xmm0 addsd %xmm1, %xmm0 cmpl $0, %ecx jl .L_2TAG_PACKET_6.0.2 fstcw 24(%esp) movzwl 24(%esp), %edx orl $768, %edx movw %dx, 28(%esp) fldcw 28(%esp) movl %eax, %edx sarl $1, %eax subl %eax, %edx movdqa (%ebx), %xmm6 pandn %xmm2, %xmm6 addl $1023, %eax movd %eax, %xmm3 psllq $52, %xmm3 orpd %xmm3, %xmm6 mulsd %xmm3, %xmm4 movsd %xmm0, 8(%esp) fldl 8(%esp) movsd %xmm6, 16(%esp) fldl 16(%esp) movsd %xmm4, 16(%esp) fldl 16(%esp) addl $1023, %edx movd %edx, %xmm4 psllq $52, %xmm4 faddp %st, %st(1) fmul %st, %st(1) faddp %st, %st(1) movsd %xmm4, 8(%esp) fldl 8(%esp) fmulp %st, %st(1) fstpl 8(%esp) movsd 8(%esp), %xmm0 fldcw 24(%esp) pextrw $3, %xmm0, %ecx andl $32752, %ecx cmpl $32752, %ecx jae .L_2TAG_PACKET_7.0.2 jmp .L_2TAG_PACKET_4.0.2 cmpl $-2147483648, %ecx jb .L_2TAG_PACKET_7.0.2 jmp .L_2TAG_PACKET_4.0.2 .L_2TAG_PACKET_7.0.2: movl $41, %edx .L_2TAG_PACKET_8.0.2: movsd %xmm0, (%esp) movsd 128(%esp), %xmm0 fldl (%esp) jmp .L_2TAG_PACKET_9.0.2 .L_2TAG_PACKET_10.0.2: cmpl $2146435072, %eax jae .L_2TAG_PACKET_11.0.2 movsd 1272(%ebx), %xmm0 mulsd %xmm0, %xmm0 movl $41, %edx jmp .L_2TAG_PACKET_8.0.2 .L_2TAG_PACKET_11.0.2: movl 132(%esp), %eax movl 128(%esp), %edx movl %eax, %ecx andl $2147483647, %eax cmpl $2146435072, %eax ja .L_2TAG_PACKET_12.0.2 cmpl $0, %edx jne .L_2TAG_PACKET_12.0.2 cmpl $0, %ecx jl .L_2TAG_PACKET_13.0.2 movsd 1256(%ebx), %xmm0 jmp .L_2TAG_PACKET_4.0.2 .L_2TAG_PACKET_13.0.2: jmp .L_2TAG_PACKET_6.0.2 .L_2TAG_PACKET_12.0.2: movsd 128(%esp), %xmm0 addsd %xmm0, %xmm0 jmp .L_2TAG_PACKET_4.0.2 .L_2TAG_PACKET_14.0.2: addl $16304, %eax cmpl $15504, %eax jb .L_2TAG_PACKET_15.0.2 movapd 1184(%ebx), %xmm2 pshufd $68, %xmm0, %xmm1 movapd 1200(%ebx), %xmm3 movapd 1216(%ebx), %xmm4 movsd 1232(%ebx), %xmm5 mulsd %xmm1, %xmm1 xorpd %xmm6, %xmm6 movl $16352, %eax pinsrw $3, %eax, %xmm6 mulpd %xmm0, %xmm2 xorpd %xmm7, %xmm7 movl $16368, %edx pinsrw $3, %edx, %xmm7 addpd %xmm3, %xmm2 mulsd %xmm1, %xmm5 pshufd $228, %xmm1, %xmm3 mulpd %xmm1, %xmm1 mulsd %xmm0, %xmm6 mulpd %xmm0, %xmm2 addpd %xmm4, %xmm2 movapd %xmm7, %xmm4 addsd %xmm6, %xmm7 mulpd %xmm3, %xmm1 psrlq $27, %xmm7 psllq $27, %xmm7 movsd 1288(%ebx), %xmm3 subsd %xmm7, %xmm4 mulpd %xmm1, %xmm2 addsd %xmm4, %xmm6 pshufd $238, %xmm2, %xmm1 addsd %xmm2, %xmm6 andpd %xmm0, %xmm3 movapd %xmm0, %xmm4 addsd %xmm6, %xmm1 subsd %xmm3, %xmm0 addsd %xmm5, %xmm1 mulsd %xmm7, %xmm3 mulsd %xmm7, %xmm0 mulsd %xmm1, %xmm4 addsd %xmm4, %xmm0 addsd %xmm3, %xmm0 jmp .L_2TAG_PACKET_4.0.2 .L_2TAG_PACKET_15.0.2: cmpl $16, %eax jae .L_2TAG_PACKET_3.0.2 movapd %xmm0, %xmm2 movd %xmm0, %eax psrlq $31, %xmm2 movd %xmm2, %ecx orl %ecx, %eax je .L_2TAG_PACKET_3.0.2 movl $16, %edx xorpd %xmm1, %xmm1 pinsrw $3, %edx, %xmm1 mulsd %xmm1, %xmm1 movl $42, %edx jmp .L_2TAG_PACKET_8.0.2 .L_2TAG_PACKET_0.0.2: cmpl $0, %eax jl .L_2TAG_PACKET_14.0.2 movl 132(%esp), %eax cmpl $1083179008, %eax jge .L_2TAG_PACKET_10.0.2 cmpl $-1048576, %eax jae .L_2TAG_PACKET_11.0.2 .L_2TAG_PACKET_6.0.2: xorpd %xmm0, %xmm0 movl $49136, %eax pinsrw $3, %eax, %xmm0 jmp .L_2TAG_PACKET_4.0.2 .L_2TAG_PACKET_4.0.2: movsd %xmm0, 48(%esp) fldl 48(%esp) .L_2TAG_PACKET_9.0.2: movl 64(%esp), %ebx movl %ebp, %esp popl %ebp ret ..B2.3: END(expm1) # -- End expm1 # Start file scope ASM ALIAS_SYMBOL(expm1l, expm1); # End file scope ASM .section .rodata, "a" .align 16 .align 16 static_const_table: .long 0 .long 4293918720 .long 0 .long 4293918720 .long 4294967232 .long 0 .long 4294967232 .long 0 .long 65472 .long 0 .long 65472 .long 0 .long 0 .long 1127743488 .long 0 .long 1127743488 .long 1697350398 .long 1079448903 .long 1697350398 .long 1079448903 .long 4277796864 .long 1065758274 .long 4277796864 .long 1065758274 .long 3164486458 .long 1025308570 .long 3164486458 .long 1025308570 .long 1963358694 .long 1065423121 .long 1431655765 .long 1069897045 .long 1431655765 .long 1067799893 .long 0 .long 1071644672 .long 381774871 .long 1062650220 .long 381774871 .long 1062650220 .long 0 .long 0 .long 0 .long 0 .long 1000070955 .long 1042145304 .long 1040187392 .long 11418 .long 988267849 .long 1039500660 .long 3539992576 .long 22960 .long 36755401 .long 1042114290 .long 402653184 .long 34629 .long 3634769483 .long 1042178627 .long 1820327936 .long 46424 .long 2155991225 .long 1041560680 .long 847249408 .long 58348 .long 2766913307 .long 1039293264 .long 3489660928 .long 70401 .long 3651174602 .long 1040488175 .long 2927624192 .long 82586 .long 3073892131 .long 1042240606 .long 1006632960 .long 94904 .long 1328391742 .long 1042019037 .long 3942645760 .long 107355 .long 2650893825 .long 1041903210 .long 822083584 .long 119943 .long 2397289153 .long 1041802037 .long 2281701376 .long 132667 .long 430997175 .long 1042110606 .long 1845493760 .long 145530 .long 1230936525 .long 1041801015 .long 1702887424 .long 158533 .long 740675935 .long 1040178913 .long 4110417920 .long 171677 .long 3489810261 .long 1041825986 .long 2793406464 .long 184965 .long 2532600530 .long 1040767882 .long 167772160 .long 198398 .long 3542557060 .long 1041827263 .long 2986344448 .long 211976 .long 1401563777 .long 1041061093 .long 922746880 .long 225703 .long 3129406026 .long 1041852413 .long 880803840 .long 239579 .long 900993572 .long 1039283234 .long 1275068416 .long 253606 .long 2115029358 .long 1042140042 .long 562036736 .long 267786 .long 1086643152 .long 1041785419 .long 1610612736 .long 282120 .long 82864366 .long 1041256244 .long 3045064704 .long 296610 .long 2392968152 .long 1040913683 .long 3573547008 .long 311258 .long 2905856183 .long 1040002214 .long 1988100096 .long 326066 .long 3742008261 .long 1040011137 .long 1451229184 .long 341035 .long 863393794 .long 1040880621 .long 914358272 .long 356167 .long 1446136837 .long 1041372426 .long 3707764736 .long 371463 .long 927855201 .long 1040617636 .long 360710144 .long 386927 .long 1492679939 .long 1041050306 .long 2952790016 .long 402558 .long 608827001 .long 1041582217 .long 2181038080 .long 418360 .long 606260204 .long 1042271987 .long 1711276032 .long 434334 .long 3163044019 .long 1041843851 .long 1006632960 .long 450482 .long 4148747325 .long 1041962972 .long 3900702720 .long 466805 .long 802924201 .long 1041275378 .long 1442840576 .long 483307 .long 3052749833 .long 1041940577 .long 1937768448 .long 499988 .long 2216116399 .long 1041486744 .long 914358272 .long 516851 .long 2729697836 .long 1041445764 .long 2566914048 .long 533897 .long 540608356 .long 1041310907 .long 2600468480 .long 551129 .long 2916344493 .long 1040535661 .long 1107296256 .long 568549 .long 731391814 .long 1039497014 .long 2566914048 .long 586158 .long 1024722704 .long 1041461625 .long 2961178624 .long 603959 .long 3806831748 .long 1041732499 .long 2675965952 .long 621954 .long 238953304 .long 1040316488 .long 2189426688 .long 640145 .long 749123235 .long 1041725785 .long 2063597568 .long 658534 .long 1168187977 .long 1041175214 .long 2986344448 .long 677123 .long 3506096399 .long 1042186095 .long 1426063360 .long 695915 .long 1470221620 .long 1041675499 .long 2566914048 .long 714911 .long 3182425146 .long 1041483134 .long 3087007744 .long 734114 .long 3131698208 .long 1042208657 .long 4068474880 .long 753526 .long 2300504125 .long 1041428596 .long 2415919104 .long 773150 .long 2290297931 .long 1037388400 .long 3716153344 .long 792987 .long 3532148223 .long 1041626194 .long 771751936 .long 813041 .long 1161884404 .long 1042015258 .long 3699376128 .long 833312 .long 876383176 .long 1037968878 .long 1241513984 .long 853805 .long 3379986796 .long 1042213153 .long 3699376128 .long 874520 .long 1545797737 .long 1041681569 .long 58720256 .long 895462 .long 2925146801 .long 1042212567 .long 855638016 .long 916631 .long 1316627971 .long 1038516204 .long 3883925504 .long 938030 .long 3267869137 .long 1040337004 .long 2726297600 .long 959663 .long 3720868999 .long 1041782409 .long 3992977408 .long 981531 .long 433316142 .long 1041994064 .long 1526726656 .long 1003638 .long 781232103 .long 1040093400 .long 2172649472 .long 1025985 .long 2773927732 .long 1053236707 .long 381774871 .long 1062650220 .long 379653899 .long 1056571845 .long 286331153 .long 1065423121 .long 436314138 .long 1059717536 .long 1431655765 .long 1067799893 .long 1431655765 .long 1069897045 .long 0 .long 1071644672 .long 0 .long 1072693248 .long 0 .long 2146435072 .long 0 .long 0 .long 4294967295 .long 2146435071 .long 0 .long 1048576 .long 4227858432 .long 4294967295 .type static_const_table,@object .size static_const_table,1296 .data .section .note.GNU-stack, "",@progbits # End