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Diffstat (limited to 'libm/x86/e_log10.S')
| -rw-r--r-- | libm/x86/e_log10.S | 795 |
1 files changed, 795 insertions, 0 deletions
diff --git a/libm/x86/e_log10.S b/libm/x86/e_log10.S new file mode 100644 index 0000000..09b2952 --- /dev/null +++ b/libm/x86/e_log10.S @@ -0,0 +1,795 @@ +/* +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 +// --------------------- +// +// Let x=2^k * mx, mx in [1,2) +// +// Get B~1/mx based on the output of rcpss instruction (B0) +// B = int((B0*LH*2^7+0.5))/2^7 +// LH is a short approximation for log10(e) +// +// Reduced argument: r=B*mx-LH (computed accurately in high and low parts) +// +// Result: k*log10(2) - log(B) + p(r) +// p(r) is a degree 7 polynomial +// -log(B) read from data table (high, low parts) +// Result is formed from high and low parts +// +// Special cases: +// log10(0) = -INF with divide-by-zero exception raised +// log10(1) = +0 +// log10(x) = NaN with invalid exception raised if x < -0, including -INF +// log10(+INF) = +INF +// +/******************************************************************************/ + +#include <private/bionic_asm.h> +# -- 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 log10 +ENTRY(log10) +# parameter 1: 8 + %ebp +..B2.1: +..B2.2: + pushl %ebp + movl %esp, %ebp + subl $104, %esp + movl %ebx, 40(%esp) + call static_func + movl %eax, %ebx + xorpd %xmm2, %xmm2 + movl $16368, %eax + pinsrw $3, %eax, %xmm2 + movl $1054736384, %ecx + movd %ecx, %xmm7 + xorpd %xmm3, %xmm3 + movl $30704, %edx + pinsrw $3, %edx, %xmm3 + movsd 112(%esp), %xmm0 + movapd %xmm0, %xmm1 + movl $32768, %edx + movd %edx, %xmm4 + movapd 2128(%ebx), %xmm5 + pextrw $3, %xmm0, %eax + orpd %xmm2, %xmm0 + movl $16352, %ecx + psllq $5, %xmm0 + movsd 2144(%ebx), %xmm2 + psrlq $34, %xmm0 + rcpss %xmm0, %xmm0 + psllq $12, %xmm1 + pshufd $78, %xmm5, %xmm6 + psrlq $12, %xmm1 + subl $16, %eax + cmpl $32736, %eax + jae .L_2TAG_PACKET_0.0.2 +.L_2TAG_PACKET_1.0.2: + mulss %xmm7, %xmm0 + orpd %xmm3, %xmm1 + andpd %xmm1, %xmm5 + paddd %xmm4, %xmm0 + subsd %xmm5, %xmm1 + movd %xmm0, %edx + psllq $29, %xmm0 + andpd %xmm6, %xmm0 + andl $32752, %eax + subl %ecx, %eax + cvtsi2sdl %eax, %xmm7 + mulpd %xmm0, %xmm5 + mulsd %xmm0, %xmm1 + movsd 2064(%ebx), %xmm6 + movapd 2080(%ebx), %xmm3 + subsd %xmm2, %xmm5 + andl $16711680, %edx + shrl $12, %edx + movapd -1504(%ebx,%edx), %xmm0 + movapd 2096(%ebx), %xmm4 + addsd %xmm5, %xmm1 + movapd 2112(%ebx), %xmm2 + mulsd %xmm7, %xmm6 + pshufd $68, %xmm1, %xmm5 + mulsd 2072(%ebx), %xmm7 + mulsd %xmm1, %xmm3 + addsd %xmm6, %xmm0 + mulpd %xmm5, %xmm4 + movsd 2152(%ebx), %xmm6 + mulpd %xmm5, %xmm5 + addpd %xmm2, %xmm4 + mulpd %xmm5, %xmm3 + pshufd $228, %xmm0, %xmm2 + addsd %xmm1, %xmm0 + mulsd %xmm1, %xmm4 + subsd %xmm0, %xmm2 + mulsd %xmm1, %xmm6 + addsd %xmm2, %xmm1 + pshufd $238, %xmm0, %xmm2 + mulsd %xmm5, %xmm5 + addsd %xmm2, %xmm7 + addsd %xmm6, %xmm1 + addpd %xmm3, %xmm4 + addsd %xmm7, %xmm1 + mulpd %xmm5, %xmm4 + addsd %xmm4, %xmm1 + pshufd $238, %xmm4, %xmm5 + addsd %xmm5, %xmm1 + addsd %xmm1, %xmm0 + jmp .L_2TAG_PACKET_2.0.2 +.L_2TAG_PACKET_0.0.2: + movsd 112(%esp), %xmm0 + movapd %xmm0, %xmm1 + addl $16, %eax + cmpl $32768, %eax + jae .L_2TAG_PACKET_3.0.2 + cmpl $16, %eax + jb .L_2TAG_PACKET_4.0.2 +.L_2TAG_PACKET_5.0.2: + addsd %xmm0, %xmm0 + jmp .L_2TAG_PACKET_2.0.2 +.L_2TAG_PACKET_6.0.2: + ja .L_2TAG_PACKET_5.0.2 + cmpl $0, %edx + ja .L_2TAG_PACKET_5.0.2 + jmp .L_2TAG_PACKET_7.0.2 +.L_2TAG_PACKET_3.0.2: + movd %xmm1, %edx + psrlq $32, %xmm1 + movd %xmm1, %ecx + addl %ecx, %ecx + cmpl $-2097152, %ecx + jae .L_2TAG_PACKET_6.0.2 + orl %ecx, %edx + cmpl $0, %edx + je .L_2TAG_PACKET_8.0.2 +.L_2TAG_PACKET_7.0.2: + xorpd %xmm1, %xmm1 + xorpd %xmm0, %xmm0 + movl $32752, %eax + pinsrw $3, %eax, %xmm1 + movl $9, %edx + mulsd %xmm1, %xmm0 +.L_2TAG_PACKET_9.0.2: + movsd %xmm0, (%esp) + movsd 112(%esp), %xmm0 + fldl (%esp) + jmp .L_2TAG_PACKET_10.0.2 +.L_2TAG_PACKET_8.0.2: + xorpd %xmm1, %xmm1 + xorpd %xmm0, %xmm0 + movl $49136, %eax + pinsrw $3, %eax, %xmm0 + divsd %xmm1, %xmm0 + movl $8, %edx + jmp .L_2TAG_PACKET_9.0.2 +.L_2TAG_PACKET_4.0.2: + movd %xmm1, %edx + psrlq $32, %xmm1 + movd %xmm1, %ecx + orl %ecx, %edx + cmpl $0, %edx + je .L_2TAG_PACKET_8.0.2 + xorpd %xmm1, %xmm1 + movl $18416, %eax + pinsrw $3, %eax, %xmm1 + mulsd %xmm1, %xmm0 + xorpd %xmm2, %xmm2 + movl $16368, %eax + pinsrw $3, %eax, %xmm2 + movapd %xmm0, %xmm1 + pextrw $3, %xmm0, %eax + orpd %xmm2, %xmm0 + movl $18416, %ecx + psllq $5, %xmm0 + movsd 2144(%ebx), %xmm2 + psrlq $34, %xmm0 + rcpss %xmm0, %xmm0 + psllq $12, %xmm1 + pshufd $78, %xmm5, %xmm6 + psrlq $12, %xmm1 + jmp .L_2TAG_PACKET_1.0.2 +.L_2TAG_PACKET_2.0.2: + movsd %xmm0, 24(%esp) + fldl 24(%esp) +.L_2TAG_PACKET_10.0.2: + movl 40(%esp), %ebx + movl %ebp, %esp + popl %ebp + ret +..B2.3: +END(log10) +# -- End log10 + +# Start file scope ASM +ALIAS_SYMBOL(log10l, log10); +# End file scope ASM + .section .rodata, "a" + .align 16 + .align 16 +static_const_table: + .long 1352628224 + .long 1070810131 + .long 521319256 + .long 1025503025 + .long 2150839296 + .long 1070801944 + .long 3329350096 + .long 3170190015 + .long 1360613376 + .long 1070793794 + .long 2024059075 + .long 1024991594 + .long 1875350528 + .long 1070785680 + .long 2163882141 + .long 3163564137 + .long 2312126464 + .long 1070777602 + .long 1975711076 + .long 1023674196 + .long 1306336256 + .long 1070769560 + .long 3524899523 + .long 3170508164 + .long 1806334976 + .long 1070761553 + .long 4254777025 + .long 1025238739 + .long 2483193856 + .long 1070753581 + .long 3800671317 + .long 3172916830 + .long 2025350144 + .long 1070745644 + .long 1731514745 + .long 1025501083 + .long 3433285632 + .long 1070737741 + .long 2551857336 + .long 3169662186 + .long 1134317568 + .long 1070729873 + .long 3426297655 + .long 3172637891 + .long 2457152512 + .long 1070722038 + .long 63549415 + .long 1025415416 + .long 1861803008 + .long 1070714237 + .long 1910171636 + .long 1023977580 + .long 2414140416 + .long 1070706469 + .long 4002514337 + .long 3170841618 + .long 2900726784 + .long 1070698734 + .long 3268064083 + .long 1022459609 + .long 2123517952 + .long 1070691032 + .long 1767031218 + .long 1022448156 + .long 3194569728 + .long 1070683362 + .long 3402332618 + .long 3171671160 + .long 650882048 + .long 1070675725 + .long 4146023905 + .long 3171023038 + .long 1928988672 + .long 1070668119 + .long 1438617867 + .long 1016360491 + .long 1594908672 + .long 1070660545 + .long 971389377 + .long 1024763979 + .long 2818746368 + .long 1070653002 + .long 3555925341 + .long 3172434821 + .long 194584576 + .long 1070645491 + .long 943919215 + .long 3172950063 + .long 1215096832 + .long 1070638010 + .long 2283358588 + .long 1022335098 + .long 501519360 + .long 1070630560 + .long 480904295 + .long 1024437959 + .long 1278266368 + .long 1070623140 + .long 2755806066 + .long 3172342012 + .long 2487812096 + .long 1070615750 + .long 2489653202 + .long 3172481099 + .long 3085451264 + .long 1070608390 + .long 3759184951 + .long 3172574892 + .long 2039090176 + .long 1070601060 + .long 1361176676 + .long 3172355319 + .long 953057280 + .long 1070591423 + .long 1176587546 + .long 3166422018 + .long 3370524672 + .long 1070576879 + .long 3669570051 + .long 1025376630 + .long 749742080 + .long 1070562394 + .long 707700964 + .long 3170814058 + .long 4008353792 + .long 1070547965 + .long 3247327652 + .long 1022431400 + .long 2612455424 + .long 1070533594 + .long 2453457344 + .long 3172322969 + .long 3230920704 + .long 1070519279 + .long 1296781801 + .long 1025115335 + .long 3965253632 + .long 1070505020 + .long 373075289 + .long 1017938528 + .long 2593157120 + .long 1070476669 + .long 1068054086 + .long 1021616576 + .long 925962240 + .long 1070448537 + .long 850121213 + .long 1023928989 + .long 1732556800 + .long 1070420620 + .long 1305206740 + .long 3172665570 + .long 3815630848 + .long 1070392915 + .long 192642943 + .long 3172699907 + .long 2001758208 + .long 1070365420 + .long 2820786683 + .long 1024704867 + .long 16746496 + .long 1070338131 + .long 1399573110 + .long 3171372773 + .long 1886492672 + .long 1070311044 + .long 3621428075 + .long 3172974358 + .long 3338196992 + .long 1070284157 + .long 3793882035 + .long 1025124701 + .long 381769728 + .long 1070257468 + .long 3877933342 + .long 3170195490 + .long 2186491904 + .long 1070230972 + .long 1838687089 + .long 1017927292 + .long 1008330752 + .long 1070204668 + .long 2228321664 + .long 1025352196 + .long 2247065600 + .long 1070178552 + .long 1413900906 + .long 3170902532 + .long 2964070400 + .long 1070152622 + .long 3590454629 + .long 1025016844 + .long 465154048 + .long 1070126876 + .long 2079688550 + .long 3172268183 + .long 883615744 + .long 1070101310 + .long 989244452 + .long 3171900485 + .long 1993768960 + .long 1070075922 + .long 1124327841 + .long 3172964992 + .long 1794471936 + .long 1070050710 + .long 1140575046 + .long 1022673726 + .long 2797932544 + .long 1070025671 + .long 1894836933 + .long 3172544059 + .long 3433797632 + .long 1070000803 + .long 3221831166 + .long 3171921685 + .long 2338371584 + .long 1069976104 + .long 3732461053 + .long 3164513518 + .long 2644013056 + .long 1069951571 + .long 2519460462 + .long 3172548740 + .long 3383814144 + .long 1069927202 + .long 2290997657 + .long 1025499649 + .long 3781380096 + .long 1069902995 + .long 380479405 + .long 1025184136 + .long 3245785088 + .long 1069878948 + .long 1096398261 + .long 3169885192 + .long 1366712320 + .long 1069855059 + .long 2218343715 + .long 3170281628 + .long 2204717056 + .long 1069831325 + .long 2668334011 + .long 1025264524 + .long 1401772032 + .long 1069807745 + .long 4103993159 + .long 1022925721 + .long 3356721152 + .long 1069784316 + .long 3573790772 + .long 3172186527 + .long 4041148416 + .long 1069761037 + .long 4027691910 + .long 3171276990 + .long 3880151040 + .long 1069737906 + .long 4087118786 + .long 3172710734 + .long 3453364224 + .long 1069714921 + .long 99014299 + .long 3172003077 + .long 3491092480 + .long 1069692080 + .long 3801836701 + .long 3172989287 + .long 575580160 + .long 1069669382 + .long 1920406012 + .long 3170874125 + .long 22282240 + .long 1069646824 + .long 964193370 + .long 1019363159 + .long 2991429632 + .long 1069624404 + .long 3372589890 + .long 1023425053 + .long 2189645824 + .long 1069602122 + .long 2610503872 + .long 1023652442 + .long 3341467648 + .long 1069579975 + .long 1190292004 + .long 1022425665 + .long 3711293440 + .long 1069557962 + .long 1104795356 + .long 1023625829 + .long 1380401152 + .long 1069524644 + .long 1156998217 + .long 1025100499 + .long 765710336 + .long 1069481144 + .long 1736649113 + .long 1024999439 + .long 849412096 + .long 1069437902 + .long 2618178330 + .long 3170853629 + .long 1433104384 + .long 1069394915 + .long 43477267 + .long 3170378811 + .long 2548596736 + .long 1069352180 + .long 3967367063 + .long 1025246584 + .long 157577216 + .long 1069309695 + .long 100402533 + .long 3172825502 + .long 3326238720 + .long 1069267455 + .long 1176892909 + .long 1025464099 + .long 4155494400 + .long 1069225459 + .long 3713707617 + .long 3172630046 + .long 3545804800 + .long 1069183704 + .long 857007315 + .long 1024965777 + .long 2602520576 + .long 1069142187 + .long 2588758347 + .long 1022463131 + .long 2631196672 + .long 1069100905 + .long 2118424235 + .long 1022490989 + .long 838135808 + .long 1069059856 + .long 4117002727 + .long 1024874520 + .long 3210903552 + .long 1069019036 + .long 650070125 + .long 3172012966 + .long 3039211520 + .long 1068978444 + .long 438055812 + .long 1017743757 + .long 2385633280 + .long 1068938077 + .long 3011990369 + .long 3171312044 + .long 3491618816 + .long 1068897932 + .long 712813818 + .long 3172720400 + .long 183644160 + .long 1068858008 + .long 4287006742 + .long 1022379728 + .long 3639214080 + .long 1068818300 + .long 353762279 + .long 3172980009 + .long 3728416768 + .long 1068778808 + .long 1851367730 + .long 1025486574 + .long 3370094592 + .long 1068739529 + .long 4046594913 + .long 3172567047 + .long 1348407296 + .long 1068700461 + .long 143189675 + .long 1025397632 + .long 899403776 + .long 1068661601 + .long 3753687842 + .long 3170772772 + .long 1117708288 + .long 1068622947 + .long 1857340812 + .long 3170782678 + .long 1248276480 + .long 1068584497 + .long 1289858203 + .long 1025222289 + .long 683237376 + .long 1068546249 + .long 2356679608 + .long 3171629170 + .long 3253764096 + .long 1068508200 + .long 3267136556 + .long 1018554987 + .long 94478336 + .long 1068441756 + .long 1927868814 + .long 3169378180 + .long 3233144832 + .long 1068366445 + .long 2682188854 + .long 1023964004 + .long 2940297216 + .long 1068291522 + .long 275301289 + .long 1023944679 + .long 3677708288 + .long 1068216982 + .long 302658771 + .long 1024465567 + .long 1576968192 + .long 1068142822 + .long 3672035940 + .long 3172254610 + .long 1614069760 + .long 1068069037 + .long 480052905 + .long 3172692062 + .long 424435712 + .long 1067995624 + .long 2207869657 + .long 3170965436 + .long 3477782528 + .long 1067922578 + .long 2980661858 + .long 3164990018 + .long 3598401536 + .long 1067849897 + .long 1974393034 + .long 3171357083 + .long 2435235840 + .long 1067777577 + .long 1385289011 + .long 1024615823 + .long 1867333632 + .long 1067705614 + .long 3442236633 + .long 1025334384 + .long 3999301632 + .long 1067634004 + .long 3506472073 + .long 1025132546 + .long 2566971392 + .long 1067562745 + .long 1425757592 + .long 3172358463 + .long 112943104 + .long 1067491833 + .long 1693407156 + .long 3172426603 + .long 3079929856 + .long 1067392159 + .long 3999942455 + .long 1018549369 + .long 2443837440 + .long 1067251701 + .long 974534460 + .long 1023963412 + .long 359366656 + .long 1067111917 + .long 2204915018 + .long 1013514416 + .long 3564519424 + .long 1066972799 + .long 3977441659 + .long 3170879860 + .long 2011086848 + .long 1066834343 + .long 590145514 + .long 1025390011 + .long 3216982016 + .long 1066696541 + .long 3629120110 + .long 1024330313 + .long 2194128896 + .long 1066559388 + .long 2367098512 + .long 3172260338 + .long 2916220928 + .long 1066422877 + .long 2262431886 + .long 1021229446 + .long 2263941120 + .long 1066172214 + .long 3118507287 + .long 1021484970 + .long 3076292608 + .long 1065901726 + .long 1411737803 + .long 3172957147 + .long 1186136064 + .long 1065632488 + .long 3109349337 + .long 1025397383 + .long 3085303808 + .long 1065364487 + .long 584715031 + .long 3172596519 + .long 1821048832 + .long 1064842211 + .long 2182246895 + .long 3172536214 + .long 697368576 + .long 1064311094 + .long 3157561765 + .long 3172716357 + .long 894042112 + .long 1063260131 + .long 3237958154 + .long 3172587292 + .long 0 + .long 0 + .long 0 + .long 0 + .long 1352628224 + .long 1066615827 + .long 521319256 + .long 1021308721 + .long 3248877870 + .long 1077250164 + .long 1691676429 + .long 3221787401 + .long 945132465 + .long 3223701783 + .long 3700831335 + .long 1073506818 + .long 2141010593 + .long 1075227551 + .long 3698831637 + .long 3220339442 + .long 4160749568 + .long 4294967295 + .long 0 + .long 4294959104 + .long 0 + .long 1071366144 + .long 3207479560 + .long 1062894188 + .type static_const_table,@object + .size static_const_table,2160 + .data + .section .note.GNU-stack, "" +# End |