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.file "logf.s"
// Copyright (c) 2000, Intel Corporation// All rights reserved.//// Contributed 2/2/2000 by John Harrison, Ted Kubaska, Bob Norin, Shane Story,// and Ping Tak Peter Tang of the Computational Software Lab, Intel Corporation.//// WARRANTY DISCLAIMER//// 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 INTEL OR ITS// 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.//// Intel Corporation is the author of this code, and requests that all// problem reports or change requests be submitted to it directly at// http://developer.intel.com/opensource. // History//==============================================================// ?/??/00 Initial version// 8/15/00 Bundle added after call to __libm_error_support to properly// set [the previously overwritten] GR_Parameter_RESULT.//// Assembly macros//=========================================
// integer registers used
LOG_AD_COEFF = r33 LOG_AD_CONSTANTS = r34 LOG_mask = r35
LOG_FFF7 = r36 LOG_bias = r37 LOG_x_n = r38 LOG_x_ind = r39 LOG_x_sexp = r40
GR_SAVE_B0 = r41 GR_SAVE_PFS = r42 GR_SAVE_GP = r43
GR_Parameter_X = r44 GR_Parameter_Y = r45 GR_Parameter_RESULT = r46 LOG_tag = r47
// floating point registers used
log_coeff_p3 = f32 log_coeff_p2 = f33 log_coeff_p1 = f34 log_const_log2 = f35
log_threshhold = f36 log_B = f37 log_r = f38 log_poly_p1 = f39 log_rsq = f40
log_poly_p2 = f41 log_poly_p3 = f42 log_n = f43 log_T = f44 log_s = f45
log_poly_q1 = f46 log_ssq = f47 log_abs_s = f48 log_poly_q2 = f49 log_x_norm = f50
log_inv_ln10 = f51 log10_f8 = f52
.data
.align 16
log_coeff_table:data8 0xbfd0001008f39d59 // p3data8 0x3fd5556073e0c45a // p2
log_constants_table:data8 0xbfdffffffffaea15 // p1data8 0x3fe62e42fefa39ef // Log(2)data8 0x3f70000000000000 // 2^-8, threshholddata8 0x3fdbcb7b1526e50e // 1/ln10
data8 0x3F60040155D5889E //log(1/frcpa(1+ 0/256)data8 0x3F78121214586B54 //log(1/frcpa(1+ 1/256)data8 0x3F841929F96832F0 //log(1/frcpa(1+ 2/256)data8 0x3F8C317384C75F06 //log(1/frcpa(1+ 3/256)data8 0x3F91A6B91AC73386 //log(1/frcpa(1+ 4/256)data8 0x3F95BA9A5D9AC039 //log(1/frcpa(1+ 5/256)data8 0x3F99D2A8074325F4 //log(1/frcpa(1+ 6/256)data8 0x3F9D6B2725979802 //log(1/frcpa(1+ 7/256)data8 0x3FA0C58FA19DFAAA //log(1/frcpa(1+ 8/256)data8 0x3FA2954C78CBCE1B //log(1/frcpa(1+ 9/256)data8 0x3FA4A94D2DA96C56 //log(1/frcpa(1+ 10/256)data8 0x3FA67C94F2D4BB58 //log(1/frcpa(1+ 11/256)data8 0x3FA85188B630F068 //log(1/frcpa(1+ 12/256)data8 0x3FAA6B8ABE73AF4C //log(1/frcpa(1+ 13/256)data8 0x3FAC441E06F72A9E //log(1/frcpa(1+ 14/256)data8 0x3FAE1E6713606D07 //log(1/frcpa(1+ 15/256)data8 0x3FAFFA6911AB9301 //log(1/frcpa(1+ 16/256)data8 0x3FB0EC139C5DA601 //log(1/frcpa(1+ 17/256)data8 0x3FB1DBD2643D190B //log(1/frcpa(1+ 18/256)data8 0x3FB2CC7284FE5F1C //log(1/frcpa(1+ 19/256)data8 0x3FB3BDF5A7D1EE64 //log(1/frcpa(1+ 20/256)data8 0x3FB4B05D7AA012E0 //log(1/frcpa(1+ 21/256)data8 0x3FB580DB7CEB5702 //log(1/frcpa(1+ 22/256)data8 0x3FB674F089365A7A //log(1/frcpa(1+ 23/256)data8 0x3FB769EF2C6B568D //log(1/frcpa(1+ 24/256)data8 0x3FB85FD927506A48 //log(1/frcpa(1+ 25/256)data8 0x3FB9335E5D594989 //log(1/frcpa(1+ 26/256)data8 0x3FBA2B0220C8E5F5 //log(1/frcpa(1+ 27/256)data8 0x3FBB0004AC1A86AC //log(1/frcpa(1+ 28/256)data8 0x3FBBF968769FCA11 //log(1/frcpa(1+ 29/256)data8 0x3FBCCFEDBFEE13A8 //log(1/frcpa(1+ 30/256)data8 0x3FBDA727638446A2 //log(1/frcpa(1+ 31/256)data8 0x3FBEA3257FE10F7A //log(1/frcpa(1+ 32/256)data8 0x3FBF7BE9FEDBFDE6 //log(1/frcpa(1+ 33/256)data8 0x3FC02AB352FF25F4 //log(1/frcpa(1+ 34/256)data8 0x3FC097CE579D204D //log(1/frcpa(1+ 35/256)data8 0x3FC1178E8227E47C //log(1/frcpa(1+ 36/256)data8 0x3FC185747DBECF34 //log(1/frcpa(1+ 37/256)data8 0x3FC1F3B925F25D41 //log(1/frcpa(1+ 38/256)data8 0x3FC2625D1E6DDF57 //log(1/frcpa(1+ 39/256)data8 0x3FC2D1610C86813A //log(1/frcpa(1+ 40/256)data8 0x3FC340C59741142E //log(1/frcpa(1+ 41/256)data8 0x3FC3B08B6757F2A9 //log(1/frcpa(1+ 42/256)data8 0x3FC40DFB08378003 //log(1/frcpa(1+ 43/256)data8 0x3FC47E74E8CA5F7C //log(1/frcpa(1+ 44/256)data8 0x3FC4EF51F6466DE4 //log(1/frcpa(1+ 45/256)data8 0x3FC56092E02BA516 //log(1/frcpa(1+ 46/256)data8 0x3FC5D23857CD74D5 //log(1/frcpa(1+ 47/256)data8 0x3FC6313A37335D76 //log(1/frcpa(1+ 48/256)data8 0x3FC6A399DABBD383 //log(1/frcpa(1+ 49/256)data8 0x3FC70337DD3CE41B //log(1/frcpa(1+ 50/256)data8 0x3FC77654128F6127 //log(1/frcpa(1+ 51/256)data8 0x3FC7E9D82A0B022D //log(1/frcpa(1+ 52/256)data8 0x3FC84A6B759F512F //log(1/frcpa(1+ 53/256)data8 0x3FC8AB47D5F5A310 //log(1/frcpa(1+ 54/256)data8 0x3FC91FE49096581B //log(1/frcpa(1+ 55/256)data8 0x3FC981634011AA75 //log(1/frcpa(1+ 56/256)data8 0x3FC9F6C407089664 //log(1/frcpa(1+ 57/256)data8 0x3FCA58E729348F43 //log(1/frcpa(1+ 58/256)data8 0x3FCABB55C31693AD //log(1/frcpa(1+ 59/256)data8 0x3FCB1E104919EFD0 //log(1/frcpa(1+ 60/256)data8 0x3FCB94EE93E367CB //log(1/frcpa(1+ 61/256)data8 0x3FCBF851C067555F //log(1/frcpa(1+ 62/256)data8 0x3FCC5C0254BF23A6 //log(1/frcpa(1+ 63/256)data8 0x3FCCC000C9DB3C52 //log(1/frcpa(1+ 64/256)data8 0x3FCD244D99C85674 //log(1/frcpa(1+ 65/256)data8 0x3FCD88E93FB2F450 //log(1/frcpa(1+ 66/256)data8 0x3FCDEDD437EAEF01 //log(1/frcpa(1+ 67/256)data8 0x3FCE530EFFE71012 //log(1/frcpa(1+ 68/256)data8 0x3FCEB89A1648B971 //log(1/frcpa(1+ 69/256)data8 0x3FCF1E75FADF9BDE //log(1/frcpa(1+ 70/256)data8 0x3FCF84A32EAD7C35 //log(1/frcpa(1+ 71/256)data8 0x3FCFEB2233EA07CD //log(1/frcpa(1+ 72/256)data8 0x3FD028F9C7035C1C //log(1/frcpa(1+ 73/256)data8 0x3FD05C8BE0D9635A //log(1/frcpa(1+ 74/256)data8 0x3FD085EB8F8AE797 //log(1/frcpa(1+ 75/256)data8 0x3FD0B9C8E32D1911 //log(1/frcpa(1+ 76/256)data8 0x3FD0EDD060B78081 //log(1/frcpa(1+ 77/256)data8 0x3FD122024CF0063F //log(1/frcpa(1+ 78/256)data8 0x3FD14BE2927AECD4 //log(1/frcpa(1+ 79/256)data8 0x3FD180618EF18ADF //log(1/frcpa(1+ 80/256)data8 0x3FD1B50BBE2FC63B //log(1/frcpa(1+ 81/256)data8 0x3FD1DF4CC7CF242D //log(1/frcpa(1+ 82/256)data8 0x3FD214456D0EB8D4 //log(1/frcpa(1+ 83/256)data8 0x3FD23EC5991EBA49 //log(1/frcpa(1+ 84/256)data8 0x3FD2740D9F870AFB //log(1/frcpa(1+ 85/256)data8 0x3FD29ECDABCDFA04 //log(1/frcpa(1+ 86/256)data8 0x3FD2D46602ADCCEE //log(1/frcpa(1+ 87/256)data8 0x3FD2FF66B04EA9D4 //log(1/frcpa(1+ 88/256)data8 0x3FD335504B355A37 //log(1/frcpa(1+ 89/256)data8 0x3FD360925EC44F5D //log(1/frcpa(1+ 90/256)data8 0x3FD38BF1C3337E75 //log(1/frcpa(1+ 91/256)data8 0x3FD3C25277333184 //log(1/frcpa(1+ 92/256)data8 0x3FD3EDF463C1683E //log(1/frcpa(1+ 93/256)data8 0x3FD419B423D5E8C7 //log(1/frcpa(1+ 94/256)data8 0x3FD44591E0539F49 //log(1/frcpa(1+ 95/256)data8 0x3FD47C9175B6F0AD //log(1/frcpa(1+ 96/256)data8 0x3FD4A8B341552B09 //log(1/frcpa(1+ 97/256)data8 0x3FD4D4F3908901A0 //log(1/frcpa(1+ 98/256)data8 0x3FD501528DA1F968 //log(1/frcpa(1+ 99/256)data8 0x3FD52DD06347D4F6 //log(1/frcpa(1+ 100/256)data8 0x3FD55A6D3C7B8A8A //log(1/frcpa(1+ 101/256)data8 0x3FD5925D2B112A59 //log(1/frcpa(1+ 102/256)data8 0x3FD5BF406B543DB2 //log(1/frcpa(1+ 103/256)data8 0x3FD5EC433D5C35AE //log(1/frcpa(1+ 104/256)data8 0x3FD61965CDB02C1F //log(1/frcpa(1+ 105/256)data8 0x3FD646A84935B2A2 //log(1/frcpa(1+ 106/256)data8 0x3FD6740ADD31DE94 //log(1/frcpa(1+ 107/256)data8 0x3FD6A18DB74A58C5 //log(1/frcpa(1+ 108/256)data8 0x3FD6CF31058670EC //log(1/frcpa(1+ 109/256)data8 0x3FD6F180E852F0BA //log(1/frcpa(1+ 110/256)data8 0x3FD71F5D71B894F0 //log(1/frcpa(1+ 111/256)data8 0x3FD74D5AEFD66D5C //log(1/frcpa(1+ 112/256)data8 0x3FD77B79922BD37E //log(1/frcpa(1+ 113/256)data8 0x3FD7A9B9889F19E2 //log(1/frcpa(1+ 114/256)data8 0x3FD7D81B037EB6A6 //log(1/frcpa(1+ 115/256)data8 0x3FD8069E33827231 //log(1/frcpa(1+ 116/256)data8 0x3FD82996D3EF8BCB //log(1/frcpa(1+ 117/256)data8 0x3FD85855776DCBFB //log(1/frcpa(1+ 118/256)data8 0x3FD8873658327CCF //log(1/frcpa(1+ 119/256)data8 0x3FD8AA75973AB8CF //log(1/frcpa(1+ 120/256)data8 0x3FD8D992DC8824E5 //log(1/frcpa(1+ 121/256)data8 0x3FD908D2EA7D9512 //log(1/frcpa(1+ 122/256)data8 0x3FD92C59E79C0E56 //log(1/frcpa(1+ 123/256)data8 0x3FD95BD750EE3ED3 //log(1/frcpa(1+ 124/256)data8 0x3FD98B7811A3EE5B //log(1/frcpa(1+ 125/256)data8 0x3FD9AF47F33D406C //log(1/frcpa(1+ 126/256)data8 0x3FD9DF270C1914A8 //log(1/frcpa(1+ 127/256)data8 0x3FDA0325ED14FDA4 //log(1/frcpa(1+ 128/256)data8 0x3FDA33440224FA79 //log(1/frcpa(1+ 129/256)data8 0x3FDA57725E80C383 //log(1/frcpa(1+ 130/256)data8 0x3FDA87D0165DD199 //log(1/frcpa(1+ 131/256)data8 0x3FDAAC2E6C03F896 //log(1/frcpa(1+ 132/256)data8 0x3FDADCCC6FDF6A81 //log(1/frcpa(1+ 133/256)data8 0x3FDB015B3EB1E790 //log(1/frcpa(1+ 134/256)data8 0x3FDB323A3A635948 //log(1/frcpa(1+ 135/256)data8 0x3FDB56FA04462909 //log(1/frcpa(1+ 136/256)data8 0x3FDB881AA659BC93 //log(1/frcpa(1+ 137/256)data8 0x3FDBAD0BEF3DB165 //log(1/frcpa(1+ 138/256)data8 0x3FDBD21297781C2F //log(1/frcpa(1+ 139/256)data8 0x3FDC039236F08819 //log(1/frcpa(1+ 140/256)data8 0x3FDC28CB1E4D32FD //log(1/frcpa(1+ 141/256)data8 0x3FDC4E19B84723C2 //log(1/frcpa(1+ 142/256)data8 0x3FDC7FF9C74554C9 //log(1/frcpa(1+ 143/256)data8 0x3FDCA57B64E9DB05 //log(1/frcpa(1+ 144/256)data8 0x3FDCCB130A5CEBB0 //log(1/frcpa(1+ 145/256)data8 0x3FDCF0C0D18F326F //log(1/frcpa(1+ 146/256)data8 0x3FDD232075B5A201 //log(1/frcpa(1+ 147/256)data8 0x3FDD490246DEFA6B //log(1/frcpa(1+ 148/256)data8 0x3FDD6EFA918D25CD //log(1/frcpa(1+ 149/256)data8 0x3FDD9509707AE52F //log(1/frcpa(1+ 150/256)data8 0x3FDDBB2EFE92C554 //log(1/frcpa(1+ 151/256)data8 0x3FDDEE2F3445E4AF //log(1/frcpa(1+ 152/256)data8 0x3FDE148A1A2726CE //log(1/frcpa(1+ 153/256)data8 0x3FDE3AFC0A49FF40 //log(1/frcpa(1+ 154/256)data8 0x3FDE6185206D516E //log(1/frcpa(1+ 155/256)data8 0x3FDE882578823D52 //log(1/frcpa(1+ 156/256)data8 0x3FDEAEDD2EAC990C //log(1/frcpa(1+ 157/256)data8 0x3FDED5AC5F436BE3 //log(1/frcpa(1+ 158/256)data8 0x3FDEFC9326D16AB9 //log(1/frcpa(1+ 159/256)data8 0x3FDF2391A2157600 //log(1/frcpa(1+ 160/256)data8 0x3FDF4AA7EE03192D //log(1/frcpa(1+ 161/256)data8 0x3FDF71D627C30BB0 //log(1/frcpa(1+ 162/256)data8 0x3FDF991C6CB3B379 //log(1/frcpa(1+ 163/256)data8 0x3FDFC07ADA69A910 //log(1/frcpa(1+ 164/256)data8 0x3FDFE7F18EB03D3E //log(1/frcpa(1+ 165/256)data8 0x3FE007C053C5002E //log(1/frcpa(1+ 166/256)data8 0x3FE01B942198A5A1 //log(1/frcpa(1+ 167/256)data8 0x3FE02F74400C64EB //log(1/frcpa(1+ 168/256)data8 0x3FE04360BE7603AD //log(1/frcpa(1+ 169/256)data8 0x3FE05759AC47FE34 //log(1/frcpa(1+ 170/256)data8 0x3FE06B5F1911CF52 //log(1/frcpa(1+ 171/256)data8 0x3FE078BF0533C568 //log(1/frcpa(1+ 172/256)data8 0x3FE08CD9687E7B0E //log(1/frcpa(1+ 173/256)data8 0x3FE0A10074CF9019 //log(1/frcpa(1+ 174/256)data8 0x3FE0B5343A234477 //log(1/frcpa(1+ 175/256)data8 0x3FE0C974C89431CE //log(1/frcpa(1+ 176/256)data8 0x3FE0DDC2305B9886 //log(1/frcpa(1+ 177/256)data8 0x3FE0EB524BAFC918 //log(1/frcpa(1+ 178/256)data8 0x3FE0FFB54213A476 //log(1/frcpa(1+ 179/256)data8 0x3FE114253DA97D9F //log(1/frcpa(1+ 180/256)data8 0x3FE128A24F1D9AFF //log(1/frcpa(1+ 181/256)data8 0x3FE1365252BF0865 //log(1/frcpa(1+ 182/256)data8 0x3FE14AE558B4A92D //log(1/frcpa(1+ 183/256)data8 0x3FE15F85A19C765B //log(1/frcpa(1+ 184/256)data8 0x3FE16D4D38C119FA //log(1/frcpa(1+ 185/256)data8 0x3FE18203C20DD133 //log(1/frcpa(1+ 186/256)data8 0x3FE196C7BC4B1F3B //log(1/frcpa(1+ 187/256)data8 0x3FE1A4A738B7A33C //log(1/frcpa(1+ 188/256)data8 0x3FE1B981C0C9653D //log(1/frcpa(1+ 189/256)data8 0x3FE1CE69E8BB106B //log(1/frcpa(1+ 190/256)data8 0x3FE1DC619DE06944 //log(1/frcpa(1+ 191/256)data8 0x3FE1F160A2AD0DA4 //log(1/frcpa(1+ 192/256)data8 0x3FE2066D7740737E //log(1/frcpa(1+ 193/256)data8 0x3FE2147DBA47A394 //log(1/frcpa(1+ 194/256)data8 0x3FE229A1BC5EBAC3 //log(1/frcpa(1+ 195/256)data8 0x3FE237C1841A502E //log(1/frcpa(1+ 196/256)data8 0x3FE24CFCE6F80D9A //log(1/frcpa(1+ 197/256)data8 0x3FE25B2C55CD5762 //log(1/frcpa(1+ 198/256)data8 0x3FE2707F4D5F7C41 //log(1/frcpa(1+ 199/256)data8 0x3FE285E0842CA384 //log(1/frcpa(1+ 200/256)data8 0x3FE294294708B773 //log(1/frcpa(1+ 201/256)data8 0x3FE2A9A2670AFF0C //log(1/frcpa(1+ 202/256)data8 0x3FE2B7FB2C8D1CC1 //log(1/frcpa(1+ 203/256)data8 0x3FE2C65A6395F5F5 //log(1/frcpa(1+ 204/256)data8 0x3FE2DBF557B0DF43 //log(1/frcpa(1+ 205/256)data8 0x3FE2EA64C3F97655 //log(1/frcpa(1+ 206/256)data8 0x3FE3001823684D73 //log(1/frcpa(1+ 207/256)data8 0x3FE30E97E9A8B5CD //log(1/frcpa(1+ 208/256)data8 0x3FE32463EBDD34EA //log(1/frcpa(1+ 209/256)data8 0x3FE332F4314AD796 //log(1/frcpa(1+ 210/256)data8 0x3FE348D90E7464D0 //log(1/frcpa(1+ 211/256)data8 0x3FE35779F8C43D6E //log(1/frcpa(1+ 212/256)data8 0x3FE36621961A6A99 //log(1/frcpa(1+ 213/256)data8 0x3FE37C299F3C366A //log(1/frcpa(1+ 214/256)data8 0x3FE38AE2171976E7 //log(1/frcpa(1+ 215/256)data8 0x3FE399A157A603E7 //log(1/frcpa(1+ 216/256)data8 0x3FE3AFCCFE77B9D1 //log(1/frcpa(1+ 217/256)data8 0x3FE3BE9D503533B5 //log(1/frcpa(1+ 218/256)data8 0x3FE3CD7480B4A8A3 //log(1/frcpa(1+ 219/256)data8 0x3FE3E3C43918F76C //log(1/frcpa(1+ 220/256)data8 0x3FE3F2ACB27ED6C7 //log(1/frcpa(1+ 221/256)data8 0x3FE4019C2125CA93 //log(1/frcpa(1+ 222/256)data8 0x3FE4181061389722 //log(1/frcpa(1+ 223/256)data8 0x3FE42711518DF545 //log(1/frcpa(1+ 224/256)data8 0x3FE436194E12B6BF //log(1/frcpa(1+ 225/256)data8 0x3FE445285D68EA69 //log(1/frcpa(1+ 226/256)data8 0x3FE45BCC464C893A //log(1/frcpa(1+ 227/256)data8 0x3FE46AED21F117FC //log(1/frcpa(1+ 228/256)data8 0x3FE47A1527E8A2D3 //log(1/frcpa(1+ 229/256)data8 0x3FE489445EFFFCCC //log(1/frcpa(1+ 230/256)data8 0x3FE4A018BCB69835 //log(1/frcpa(1+ 231/256)data8 0x3FE4AF5A0C9D65D7 //log(1/frcpa(1+ 232/256)data8 0x3FE4BEA2A5BDBE87 //log(1/frcpa(1+ 233/256)data8 0x3FE4CDF28F10AC46 //log(1/frcpa(1+ 234/256)data8 0x3FE4DD49CF994058 //log(1/frcpa(1+ 235/256)data8 0x3FE4ECA86E64A684 //log(1/frcpa(1+ 236/256)data8 0x3FE503C43CD8EB68 //log(1/frcpa(1+ 237/256)data8 0x3FE513356667FC57 //log(1/frcpa(1+ 238/256)data8 0x3FE522AE0738A3D8 //log(1/frcpa(1+ 239/256)data8 0x3FE5322E26867857 //log(1/frcpa(1+ 240/256)data8 0x3FE541B5CB979809 //log(1/frcpa(1+ 241/256)data8 0x3FE55144FDBCBD62 //log(1/frcpa(1+ 242/256)data8 0x3FE560DBC45153C7 //log(1/frcpa(1+ 243/256)data8 0x3FE5707A26BB8C66 //log(1/frcpa(1+ 244/256)data8 0x3FE587F60ED5B900 //log(1/frcpa(1+ 245/256)data8 0x3FE597A7977C8F31 //log(1/frcpa(1+ 246/256)data8 0x3FE5A760D634BB8B //log(1/frcpa(1+ 247/256)data8 0x3FE5B721D295F10F //log(1/frcpa(1+ 248/256)data8 0x3FE5C6EA94431EF9 //log(1/frcpa(1+ 249/256)data8 0x3FE5D6BB22EA86F6 //log(1/frcpa(1+ 250/256)data8 0x3FE5E6938645D390 //log(1/frcpa(1+ 251/256)data8 0x3FE5F673C61A2ED2 //log(1/frcpa(1+ 252/256)data8 0x3FE6065BEA385926 //log(1/frcpa(1+ 253/256)data8 0x3FE6164BFA7CC06B //log(1/frcpa(1+ 254/256)data8 0x3FE62643FECF9743 //log(1/frcpa(1+ 255/256)
.global logf.global log10f
.text.proc log10f.align 32log10f:
{ .mfi alloc r32 = ar.pfs,1,11,4,0 frcpa.s1 log_B,p15 = f1,f8 addl LOG_AD_COEFF = @ltoff(log_coeff_table),gp}{ .mfi mov LOG_mask = 0x1FFFF fnorm.s1 log_x_norm = f8 addl LOG_AD_CONSTANTS = @ltoff(log_constants_table),gp;;
}
{ .mfi mov LOG_FFF7 = 0xFFF7 fclass.m.unc p8,p0 = f8,0x7 // @zero shr LOG_bias = LOG_mask,1}{ .mfi nop.m 999 fms.s1 log_s = f1,f8,f1 cmp.eq p6,p7 = r0,r0 ;;
}
{ .mfi ld8 LOG_AD_COEFF = [LOG_AD_COEFF] nop.f 999 nop.i 999}{ .mfb ld8 LOG_AD_CONSTANTS = [LOG_AD_CONSTANTS] nop.f 999 br.sptk LOGF_LOG10F_COMMON}
.endp log10f
.text.proc logf.align 32logf:
{ .mfi alloc r32 = ar.pfs,1,11,4,0 frcpa.s1 log_B,p15 = f1,f8 addl LOG_AD_COEFF = @ltoff(log_coeff_table),gp} { .mfi mov LOG_mask = 0x1FFFF fnorm.s1 log_x_norm = f8 addl LOG_AD_CONSTANTS = @ltoff(log_constants_table),gp;;
}
{ .mfi mov LOG_FFF7 = 0xFFF7 fclass.m.unc p8,p0 = f8,0x7 // @zero shr LOG_bias = LOG_mask,1} { .mfi nop.m 999 fms.s1 log_s = f1,f8,f1 cmp.eq p7,p6 = r0,r0 ;;
}
{ .mfi ld8 LOG_AD_COEFF = [LOG_AD_COEFF] nop.f 999 nop.i 999} { .mfi ld8 LOG_AD_CONSTANTS = [LOG_AD_CONSTANTS] nop.f 999 nop.i 999;;
}
LOGF_LOG10F_COMMON:
{ .mfi ldfpd log_coeff_p3,log_coeff_p2 = [LOG_AD_COEFF],16 fms.s1 log_r = f8,log_B,f1 nop.i 999} { .mfb ldfpd log_coeff_p1,log_const_log2 = [LOG_AD_CONSTANTS],16 nop.f 999(p8) br.cond.spnt LOG_NAN_INF_NEG_ZERO ;;
}
{ .mfi ldfpd log_threshhold, log_inv_ln10 = [LOG_AD_CONSTANTS],16 fma.s1 log_ssq = log_s,log_s,f0 nop.i 999;;
} { .mfi getf.exp LOG_x_sexp = log_x_norm fmerge.s log_abs_s = f1,log_s nop.i 999;;
} { .mfi getf.sig LOG_x_ind = log_x_norm nop.f 999 nop.i 999;;
} { .mfi and LOG_x_n = LOG_x_sexp,LOG_mask fma.s1 log_rsq = log_r,log_r,f0 cmp.ge p10,p0 = LOG_x_sexp,LOG_mask;;
} { .mfi sub LOG_x_n = LOG_x_n,LOG_bias nop.f 999 shl LOG_x_ind = LOG_x_ind,1;;
} { .mfi setf.sig log_n = LOG_x_n nop.f 999 shr.u LOG_x_ind = LOG_x_ind,56;;
} { .mfi nop.m 999 nop.f 999 shl LOG_x_ind = LOG_x_ind,3;;
} { .mfi nop.m 999 fma.s1 log_poly_q1 = log_s,log_coeff_p3,log_coeff_p2 nop.i 999} { .mfi nop.m 999 fma.s1 log_poly_p1 = log_r,log_coeff_p3,log_coeff_p2 nop.i 999;;
}
{ .mfb add LOG_AD_CONSTANTS = LOG_AD_CONSTANTS,LOG_x_ind fcmp.lt.s1 p11,p12 = log_abs_s,log_threshhold(p10) br.cond.spnt LOG_NAN_INF_NEG_ZERO ;;
} { .mfi ldfd log_T = [LOG_AD_CONSTANTS] nop.f 999 nop.i 999;;
} { .mfi nop.m 999 fma.s1 log_poly_q2 = log_s,log_poly_q1,log_coeff_p1 nop.i 999} { .mfi nop.m 999 fma.s1 log_poly_p2 = log_r,log_poly_p1,log_coeff_p1 nop.i 999;;
}
{ .mfi nop.m 999 fcvt.xf log_n = log_n nop.i 999;;
} { .mfi nop.m 999(p11) fma.s f8 = log_ssq,log_poly_q2,log_s nop.i 999} { .mfi nop.m 999 fma.s1 log_poly_p3 = log_rsq,log_poly_p2,log_r nop.i 999;;
}
{ .mfi nop.m 999(p11) fma.s1 log10_f8 = log_ssq,log_poly_q2,log_s nop.i 999};;
{ .mfi nop.m 999 fma.s1 log_T = log_n,log_const_log2,log_T nop.i 999;;
} { .mfb nop.m 999(p12) fma.s f8 = log_T,f1,log_poly_p3 nop.b 999}
{ .mfb nop.m 999(p12) fma.s1 log10_f8 = log_T,f1,log_poly_p3 nop.b 999};;
{ .mfb nop.m 999(p6) fma.s f8 = log_inv_ln10, log10_f8, f0 br.ret.sptk b0 };;
LOG_NAN_INF_NEG_ZERO:
// Log[inf] = inf
// Log[0] = -infinity, call error support, tag 4// Log[-0] = -infinity, call error support, tag 4
// Log[-nonzero] = qnan indefinite, call error support, tag 5// Log[-inf] = qnan indefinite, call error support, tag 5
// Log[0] = -infinity, call error support, tag 10// Log[-0] = -infinity, call error support, tag 10
// Log[-nonzero] = qnan indefinite, call error support, tag 11// Log[-inf] = qnan indefinite, call error support, tag 11
// Log[Nan] = quite NaN
///////////////////////// if x is Nan, leave immediately fclass.m.unc p8,p0 = f8,0xc3 // @snan | @qnan;;
(p8) fnorm f8 = f8;;
(p8) br.ret.spnt b0
///////////////////////// if x is +infinity, leave immediately fclass.m.unc p8,p0 = f8,0x21 // @inf | @pos;;
(p8) frcpa.s1 f8,p15 = f1,f0;;
(p8) br.ret.spnt b0
// else if x is zero, set tag to 4 (logf) or 10 (log10f) and call error support// Log[+-0] = -infinity, with dbz set. Range error
fclass.m.unc p8,p9 = f8,0x7 // @zero;;
(p8) frcpa f8,p15 = f1,f0;;
.pred.rel "mutex",p7,p6(p8) fmerge.ns f8 = f8,f8(p7) mov LOG_tag = 4(p6) mov LOG_tag = 10
(p8) br.cond.spnt __libm_error_region
// else if x is -non-zero, set tag to 5 and call error support// Log[-norm, -unorm, -inf] = qnan indefinite, invalid set, domain error
(p9) fclass.m.unc p10, p0 = f8,0x3a // @inf | @norm | @unorm | @neg;;
(p10) frcpa.s0 f8,p15 = f0,f0(p7) mov LOG_tag = 5(p6) mov LOG_tag = 11
br.cond.spnt __libm_error_region
.endp logf
///////////////////////////////////////////////////////////////////// Error handling region///////////////////////////////////////////////////////////////////
// Stack operations when calling error support.// (1) (2)// sp -> + psp -> +// | |// | | <- GR_Y// | |// | <-GR_Y Y2->|// | |// | | <- GR_X// | |// sp-64 -> + sp -> +// save ar.pfs save b0// save gp
// (3) (call) (4)// psp -> + sp -> +// | |// R3 ->| <- GR_RESULT | -> f8// | |// Y2 ->| <- GR_Y |// | |// X1 ->| |// | |// sp -> + +// restore gp// restore ar.pfs
.proc __libm_error_region__libm_error_region:.prologue
// (1){ .mfi add GR_Parameter_Y=-32,sp // Parameter 2 value nop.f 0.save ar.pfs,GR_SAVE_PFS mov GR_SAVE_PFS=ar.pfs // Save ar.pfs}{ .mfi.fframe 64 add sp=-64,sp // Create new stack nop.f 0 mov GR_SAVE_GP=gp // Save gp};;
// (2){ .mmi stfs [GR_Parameter_Y] = f1,16 // STORE Parameter 2 on stack add GR_Parameter_X = 16,sp // Parameter 1 address.save b0, GR_SAVE_B0 mov GR_SAVE_B0=b0 // Save b0};;
.body// (3){ .mib stfs [GR_Parameter_X] = log_x_norm // STORE Parameter 1 on stack add GR_Parameter_RESULT = 0,GR_Parameter_Y // Parameter 3 address nop.b 0}{ .mib stfs [GR_Parameter_Y] = f8 // STORE Parameter 3 on stack add GR_Parameter_Y = -16,GR_Parameter_Y br.call.sptk b0=__libm_error_support# // Call error handling function
};;
{ .mmi nop.m 0 nop.m 0 add GR_Parameter_RESULT = 48,sp};;
{ .mmi ldfs f8 = [GR_Parameter_RESULT] // Get return result off stack.restore add sp = 64,sp // Restore stack pointer mov b0 = GR_SAVE_B0 // Restore return address};;
{ .mib mov gp = GR_SAVE_GP // Restore gp mov ar.pfs = GR_SAVE_PFS // Restore ar.pfs br.ret.sptk b0 // Return};;
.endp __libm_error_region
.type __libm_error_support#,@function
.global __libm_error_support#
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