Editando: log10_s390x.s
// Copyright 2016 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. #include "textflag.h" // Minimax polynomial coefficients and other constants DATA log10rodataL19<>+0(SB)/8, $0.000000000000000000E+00 DATA log10rodataL19<>+8(SB)/8, $-1.0 DATA log10rodataL19<>+16(SB)/8, $0x7FF8000000000000 //+NanN DATA log10rodataL19<>+24(SB)/8, $.15375570329280596749 DATA log10rodataL19<>+32(SB)/8, $.60171950900703668594E+04 DATA log10rodataL19<>+40(SB)/8, $-1.9578460454940795898 DATA log10rodataL19<>+48(SB)/8, $0.78962633073318517310E-01 DATA log10rodataL19<>+56(SB)/8, $-.71784211884836937993E-02 DATA log10rodataL19<>+64(SB)/8, $0.87011165920689940661E-03 DATA log10rodataL19<>+72(SB)/8, $-.11865158981621437541E-03 DATA log10rodataL19<>+80(SB)/8, $0.17258413403018680410E-04 DATA log10rodataL19<>+88(SB)/8, $0.40752932047883484315E-06 DATA log10rodataL19<>+96(SB)/8, $-.26149194688832680410E-05 DATA log10rodataL19<>+104(SB)/8, $0.92453396963875026759E-08 DATA log10rodataL19<>+112(SB)/8, $-.64572084905921579630E-07 DATA log10rodataL19<>+120(SB)/8, $-5.5 DATA log10rodataL19<>+128(SB)/8, $18446744073709551616. GLOBL log10rodataL19<>+0(SB), RODATA, $136 // Table of log10 correction terms DATA log10tab2074<>+0(SB)/8, $0.254164497922885069E-01 DATA log10tab2074<>+8(SB)/8, $0.179018857989381839E-01 DATA log10tab2074<>+16(SB)/8, $0.118926768029048674E-01 DATA log10tab2074<>+24(SB)/8, $0.722595568238080033E-02 DATA log10tab2074<>+32(SB)/8, $0.376393570022739135E-02 DATA log10tab2074<>+40(SB)/8, $0.138901135928814326E-02 DATA log10tab2074<>+48(SB)/8, $0 DATA log10tab2074<>+56(SB)/8, $-0.490780466387818203E-03 DATA log10tab2074<>+64(SB)/8, $-0.159811431402137571E-03 DATA log10tab2074<>+72(SB)/8, $0.925796337165100494E-03 DATA log10tab2074<>+80(SB)/8, $0.270683176738357035E-02 DATA log10tab2074<>+88(SB)/8, $0.513079030821304758E-02 DATA log10tab2074<>+96(SB)/8, $0.815089785397996303E-02 DATA log10tab2074<>+104(SB)/8, $0.117253060262419215E-01 DATA log10tab2074<>+112(SB)/8, $0.158164239345343963E-01 DATA log10tab2074<>+120(SB)/8, $0.203903595489229786E-01 GLOBL log10tab2074<>+0(SB), RODATA, $128 // Log10 returns the decimal logarithm of the argument. // // Special cases are: // Log(+Inf) = +Inf // Log(0) = -Inf // Log(x < 0) = NaN // Log(NaN) = NaN // The algorithm used is minimax polynomial approximation // with coefficients determined with a Remez exchange algorithm. TEXT ·log10Asm(SB),NOSPLIT,$8-16 FMOVD x+0(FP), F0 MOVD $log10rodataL19<>+0(SB), R9 FMOVD F0, x-8(SP) WORD $0xC0298006 //iilf %r2,2147909631 BYTE $0x7F BYTE $0xFF WORD $0x5840F008 //l %r4, 8(%r15) SUBW R4, R2, R3 RISBGZ $32, $47, $0, R3, R5 MOVH $0x0, R1 RISBGN $0, $31, $32, R5, R1 WORD $0xC0590016 //iilf %r5,1507327 BYTE $0xFF BYTE $0xFF MOVW R4, R10 MOVW R5, R11 CMPBLE R10, R11, L2 WORD $0xC0297FEF //iilf %r2,2146435071 BYTE $0xFF BYTE $0xFF MOVW R4, R10 MOVW R2, R11 CMPBLE R10, R11, L16 L3: L1: FMOVD F0, ret+8(FP) RET L2: LTDBR F0, F0 BLEU L13 WORD $0xED009080 //mdb %f0,.L20-.L19(%r9) BYTE $0x00 BYTE $0x1C FMOVD F0, x-8(SP) WORD $0x5B20F008 //s %r2, 8(%r15) RISBGZ $57, $60, $51, R2, R3 ANDW $0xFFFF0000, R2 RISBGN $0, $31, $32, R2, R1 ADDW $0x4000000, R2 BLEU L17 L8: SRW $8, R2, R2 ORW $0x45000000, R2 L4: FMOVD log10rodataL19<>+120(SB), F2 LDGR R1, F4 WFMADB V4, V0, V2, V0 FMOVD log10rodataL19<>+112(SB), F4 FMOVD log10rodataL19<>+104(SB), F6 WFMADB V0, V6, V4, V6 FMOVD log10rodataL19<>+96(SB), F4 FMOVD log10rodataL19<>+88(SB), F1 WFMADB V0, V1, V4, V1 WFMDB V0, V0, V4 FMOVD log10rodataL19<>+80(SB), F2 WFMADB V6, V4, V1, V6 FMOVD log10rodataL19<>+72(SB), F1 WFMADB V0, V2, V1, V2 FMOVD log10rodataL19<>+64(SB), F1 RISBGZ $57, $60, $0, R3, R3 WFMADB V4, V6, V2, V6 FMOVD log10rodataL19<>+56(SB), F2 WFMADB V0, V1, V2, V1 VLVGF $0, R2, V2 WFMADB V4, V6, V1, V4 LDEBR F2, F2 FMOVD log10rodataL19<>+48(SB), F6 WFMADB V0, V4, V6, V4 FMOVD log10rodataL19<>+40(SB), F1 FMOVD log10rodataL19<>+32(SB), F6 MOVD $log10tab2074<>+0(SB), R1 WFMADB V2, V1, V6, V2 WORD $0x68331000 //ld %f3,0(%r3,%r1) WFMADB V0, V4, V3, V0 FMOVD log10rodataL19<>+24(SB), F4 FMADD F4, F2, F0 FMOVD F0, ret+8(FP) RET L16: RISBGZ $40, $55, $56, R3, R2 RISBGZ $57, $60, $51, R3, R3 ORW $0x45000000, R2 BR L4 L13: BGE L18 //jnl .L18 BVS L18 FMOVD log10rodataL19<>+16(SB), F0 BR L1 L17: SRAW $1, R2, R2 SUBW $0x40000000, R2 BR L8 L18: FMOVD log10rodataL19<>+8(SB), F0 WORD $0xED009000 //ddb %f0,.L36-.L19(%r9) BYTE $0x00 BYTE $0x1D BR L1
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