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02/02/2024 06:09:55 PM
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abs.go
366 bytes
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acos_s390x.s
3.73 KB
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acosh.go
1.71 KB
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acosh_s390x.s
4.32 KB
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all_test.go
86.77 KB
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arith_s390x.go
3.73 KB
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arith_s390x_test.go
10.78 KB
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asin.go
1.09 KB
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asin_s390x.s
4.16 KB
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asinh.go
1.92 KB
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asinh_s390x.s
5.74 KB
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atan.go
3.03 KB
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atan2.go
1.52 KB
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atan2_s390x.s
6.93 KB
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atan_s390x.s
3.69 KB
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atanh.go
1.99 KB
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atanh_s390x.s
5.06 KB
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big
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bits
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bits.go
1.87 KB
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cbrt.go
2.31 KB
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cbrt_s390x.s
4.89 KB
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cmplx
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const.go
2.76 KB
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const_test.go
1.29 KB
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copysign.go
396 bytes
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cosh_s390x.s
5.59 KB
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dim.go
1.87 KB
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dim_amd64.s
1.92 KB
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dim_arm64.s
963 bytes
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dim_asm.go
344 bytes
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dim_noasm.go
410 bytes
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dim_riscv64.s
1.16 KB
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dim_s390x.s
1.97 KB
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erf.go
11.51 KB
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erf_s390x.s
8.5 KB
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erfc_s390x.s
14.4 KB
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erfinv.go
3.37 KB
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example_test.go
3.75 KB
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exp.go
5.38 KB
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exp2_asm.go
252 bytes
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exp2_noasm.go
284 bytes
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exp_amd64.go
261 bytes
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exp_amd64.s
4.24 KB
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exp_arm64.s
5.36 KB
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exp_asm.go
268 bytes
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exp_noasm.go
302 bytes
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exp_s390x.s
4.65 KB
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expm1.go
7.91 KB
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expm1_s390x.s
5.29 KB
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export_s390x_test.go
732 bytes
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export_test.go
357 bytes
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floor.go
3.29 KB
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floor_386.s
1.47 KB
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floor_amd64.s
2 KB
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floor_arm64.s
573 bytes
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floor_asm.go
431 bytes
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floor_noasm.go
531 bytes
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floor_ppc64x.s
499 bytes
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floor_s390x.s
579 bytes
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floor_wasm.s
459 bytes
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fma.go
4.61 KB
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frexp.go
929 bytes
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gamma.go
5.53 KB
02/02/2024 06:09:55 PM
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huge_test.go
2.91 KB
02/02/2024 06:09:55 PM
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hypot.go
850 bytes
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hypot_386.s
1.81 KB
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hypot_amd64.s
1.05 KB
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hypot_asm.go
264 bytes
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hypot_noasm.go
297 bytes
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j0.go
13.6 KB
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j1.go
13.3 KB
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jn.go
7.18 KB
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ldexp.go
1.05 KB
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lgamma.go
11.03 KB
02/02/2024 06:09:55 PM
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log.go
3.86 KB
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log10.go
873 bytes
02/02/2024 06:09:55 PM
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log10_s390x.s
4.73 KB
02/02/2024 06:09:55 PM
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log1p.go
6.34 KB
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log1p_s390x.s
5.15 KB
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log_amd64.s
3.66 KB
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log_asm.go
259 bytes
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log_s390x.s
4.31 KB
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log_stub.go
292 bytes
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logb.go
1021 bytes
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mod.go
903 bytes
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modf.go
913 bytes
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modf_arm64.s
447 bytes
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modf_asm.go
292 bytes
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modf_noasm.go
326 bytes
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modf_ppc64x.s
416 bytes
02/02/2024 06:09:55 PM
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nextafter.go
1.21 KB
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pow.go
3.65 KB
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pow10.go
1.24 KB
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pow_s390x.s
16.27 KB
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rand
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02/02/2024 06:09:55 PM
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remainder.go
2.04 KB
02/02/2024 06:09:55 PM
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signbit.go
302 bytes
02/02/2024 06:09:55 PM
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sin.go
6.35 KB
02/02/2024 06:09:55 PM
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sin_s390x.s
8.57 KB
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sincos.go
1.76 KB
02/02/2024 06:09:55 PM
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sinh.go
1.69 KB
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sinh_s390x.s
5.98 KB
02/02/2024 06:09:55 PM
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sqrt.go
4.75 KB
02/02/2024 06:09:55 PM
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stubs.go
2.57 KB
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stubs_s390x.s
12.38 KB
02/02/2024 06:09:55 PM
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tan.go
3.68 KB
02/02/2024 06:09:55 PM
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tan_s390x.s
2.72 KB
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tanh.go
2.66 KB
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tanh_s390x.s
4.57 KB
02/02/2024 06:09:55 PM
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trig_reduce.go
3.34 KB
02/02/2024 06:09:55 PM
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unsafe.go
1.27 KB
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Editing: log_amd64.s
Close
// Copyright 2010 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" #define HSqrt2 7.07106781186547524401e-01 // sqrt(2)/2 #define Ln2Hi 6.93147180369123816490e-01 // 0x3fe62e42fee00000 #define Ln2Lo 1.90821492927058770002e-10 // 0x3dea39ef35793c76 #define L1 6.666666666666735130e-01 // 0x3FE5555555555593 #define L2 3.999999999940941908e-01 // 0x3FD999999997FA04 #define L3 2.857142874366239149e-01 // 0x3FD2492494229359 #define L4 2.222219843214978396e-01 // 0x3FCC71C51D8E78AF #define L5 1.818357216161805012e-01 // 0x3FC7466496CB03DE #define L6 1.531383769920937332e-01 // 0x3FC39A09D078C69F #define L7 1.479819860511658591e-01 // 0x3FC2F112DF3E5244 #define NaN 0x7FF8000000000001 #define NegInf 0xFFF0000000000000 #define PosInf 0x7FF0000000000000 // func Log(x float64) float64 TEXT ·archLog(SB),NOSPLIT,$0 // test bits for special cases MOVQ x+0(FP), BX MOVQ $~(1<<63), AX // sign bit mask ANDQ BX, AX JEQ isZero MOVQ $0, AX CMPQ AX, BX JGT isNegative MOVQ $PosInf, AX CMPQ AX, BX JLE isInfOrNaN // f1, ki := math.Frexp(x); k := float64(ki) MOVQ BX, X0 MOVQ $0x000FFFFFFFFFFFFF, AX MOVQ AX, X2 ANDPD X0, X2 MOVSD $0.5, X0 // 0x3FE0000000000000 ORPD X0, X2 // X2= f1 SHRQ $52, BX ANDL $0x7FF, BX SUBL $0x3FE, BX XORPS X1, X1 // break dependency for CVTSL2SD CVTSL2SD BX, X1 // x1= k, x2= f1 // if f1 < math.Sqrt2/2 { k -= 1; f1 *= 2 } MOVSD $HSqrt2, X0 // x0= 0.7071, x1= k, x2= f1 CMPSD X2, X0, 5 // cmpnlt; x0= 0 or ^0, x1= k, x2 = f1 MOVSD $1.0, X3 // x0= 0 or ^0, x1= k, x2 = f1, x3= 1 ANDPD X0, X3 // x0= 0 or ^0, x1= k, x2 = f1, x3= 0 or 1 SUBSD X3, X1 // x0= 0 or ^0, x1= k, x2 = f1, x3= 0 or 1 MOVSD $1.0, X0 // x0= 1, x1= k, x2= f1, x3= 0 or 1 ADDSD X0, X3 // x0= 1, x1= k, x2= f1, x3= 1 or 2 MULSD X3, X2 // x0= 1, x1= k, x2= f1 // f := f1 - 1 SUBSD X0, X2 // x1= k, x2= f // s := f / (2 + f) MOVSD $2.0, X0 ADDSD X2, X0 MOVAPD X2, X3 DIVSD X0, X3 // x1=k, x2= f, x3= s // s2 := s * s MOVAPD X3, X4 // x1= k, x2= f, x3= s MULSD X4, X4 // x1= k, x2= f, x3= s, x4= s2 // s4 := s2 * s2 MOVAPD X4, X5 // x1= k, x2= f, x3= s, x4= s2 MULSD X5, X5 // x1= k, x2= f, x3= s, x4= s2, x5= s4 // t1 := s2 * (L1 + s4*(L3+s4*(L5+s4*L7))) MOVSD $L7, X6 MULSD X5, X6 ADDSD $L5, X6 MULSD X5, X6 ADDSD $L3, X6 MULSD X5, X6 ADDSD $L1, X6 MULSD X6, X4 // x1= k, x2= f, x3= s, x4= t1, x5= s4 // t2 := s4 * (L2 + s4*(L4+s4*L6)) MOVSD $L6, X6 MULSD X5, X6 ADDSD $L4, X6 MULSD X5, X6 ADDSD $L2, X6 MULSD X6, X5 // x1= k, x2= f, x3= s, x4= t1, x5= t2 // R := t1 + t2 ADDSD X5, X4 // x1= k, x2= f, x3= s, x4= R // hfsq := 0.5 * f * f MOVSD $0.5, X0 MULSD X2, X0 MULSD X2, X0 // x0= hfsq, x1= k, x2= f, x3= s, x4= R // return k*Ln2Hi - ((hfsq - (s*(hfsq+R) + k*Ln2Lo)) - f) ADDSD X0, X4 // x0= hfsq, x1= k, x2= f, x3= s, x4= hfsq+R MULSD X4, X3 // x0= hfsq, x1= k, x2= f, x3= s*(hfsq+R) MOVSD $Ln2Lo, X4 MULSD X1, X4 // x4= k*Ln2Lo ADDSD X4, X3 // x0= hfsq, x1= k, x2= f, x3= s*(hfsq+R)+k*Ln2Lo SUBSD X3, X0 // x0= hfsq-(s*(hfsq+R)+k*Ln2Lo), x1= k, x2= f SUBSD X2, X0 // x0= (hfsq-(s*(hfsq+R)+k*Ln2Lo))-f, x1= k MULSD $Ln2Hi, X1 // x0= (hfsq-(s*(hfsq+R)+k*Ln2Lo))-f, x1= k*Ln2Hi SUBSD X0, X1 // x1= k*Ln2Hi-((hfsq-(s*(hfsq+R)+k*Ln2Lo))-f) MOVSD X1, ret+8(FP) RET isInfOrNaN: MOVQ BX, ret+8(FP) // +Inf or NaN, return x RET isNegative: MOVQ $NaN, AX MOVQ AX, ret+8(FP) // return NaN RET isZero: MOVQ $NegInf, AX MOVQ AX, ret+8(FP) // return -Inf RET