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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
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acosh.go
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acosh_s390x.s
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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
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asin.go
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asin_s390x.s
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asinh.go
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asinh_s390x.s
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atan.go
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atan2.go
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atan2_s390x.s
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atan_s390x.s
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atanh.go
1.99 KB
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atanh_s390x.s
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big
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bits
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bits.go
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cbrt.go
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cbrt_s390x.s
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cmplx
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const.go
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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
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dim.go
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dim_amd64.s
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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
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dim_s390x.s
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erf.go
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erf_s390x.s
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erfc_s390x.s
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erfinv.go
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example_test.go
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exp.go
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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
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exp_arm64.s
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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
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expm1.go
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expm1_s390x.s
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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
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floor_386.s
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floor_amd64.s
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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
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floor_ppc64x.s
499 bytes
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floor_s390x.s
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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
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huge_test.go
2.91 KB
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hypot.go
850 bytes
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hypot_386.s
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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
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log.go
3.86 KB
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log10.go
873 bytes
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log10_s390x.s
4.73 KB
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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
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nextafter.go
1.21 KB
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pow.go
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pow10.go
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pow_s390x.s
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rand
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remainder.go
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signbit.go
302 bytes
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sin.go
6.35 KB
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sin_s390x.s
8.57 KB
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sincos.go
1.76 KB
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sinh.go
1.69 KB
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sinh_s390x.s
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sqrt.go
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stubs.go
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stubs_s390x.s
12.38 KB
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tan.go
3.68 KB
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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
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trig_reduce.go
3.34 KB
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unsafe.go
1.27 KB
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Editing: sinh.go
Close
// Copyright 2009 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. package math /* Floating-point hyperbolic sine and cosine. The exponential func is called for arguments greater in magnitude than 0.5. A series is used for arguments smaller in magnitude than 0.5. Cosh(x) is computed from the exponential func for all arguments. */ // Sinh returns the hyperbolic sine of x. // // Special cases are: // // Sinh(Β±0) = Β±0 // Sinh(Β±Inf) = Β±Inf // Sinh(NaN) = NaN func Sinh(x float64) float64 { if haveArchSinh { return archSinh(x) } return sinh(x) } func sinh(x float64) float64 { // The coefficients are #2029 from Hart & Cheney. (20.36D) const ( P0 = -0.6307673640497716991184787251e+6 P1 = -0.8991272022039509355398013511e+5 P2 = -0.2894211355989563807284660366e+4 P3 = -0.2630563213397497062819489e+2 Q0 = -0.6307673640497716991212077277e+6 Q1 = 0.1521517378790019070696485176e+5 Q2 = -0.173678953558233699533450911e+3 ) sign := false if x < 0 { x = -x sign = true } var temp float64 switch { case x > 21: temp = Exp(x) * 0.5 case x > 0.5: ex := Exp(x) temp = (ex - 1/ex) * 0.5 default: sq := x * x temp = (((P3*sq+P2)*sq+P1)*sq + P0) * x temp = temp / (((sq+Q2)*sq+Q1)*sq + Q0) } if sign { temp = -temp } return temp } // Cosh returns the hyperbolic cosine of x. // // Special cases are: // // Cosh(Β±0) = 1 // Cosh(Β±Inf) = +Inf // Cosh(NaN) = NaN func Cosh(x float64) float64 { if haveArchCosh { return archCosh(x) } return cosh(x) } func cosh(x float64) float64 { x = Abs(x) if x > 21 { return Exp(x) * 0.5 } ex := Exp(x) return (ex + 1/ex) * 0.5 }