OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	02/02/2024 06:09:55 PM	rwxr-xr-x
📄 abs.go	366 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 acos_s390x.s	3.73 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 acosh.go	1.71 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 acosh_s390x.s	4.32 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 all_test.go	86.77 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 arith_s390x.go	3.73 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 arith_s390x_test.go	10.78 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 asin.go	1.09 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 asin_s390x.s	4.16 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 asinh.go	1.92 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 asinh_s390x.s	5.74 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 atan.go	3.03 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 atan2.go	1.52 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 atan2_s390x.s	6.93 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 atan_s390x.s	3.69 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 atanh.go	1.99 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 atanh_s390x.s	5.06 KB	02/02/2024 06:09:55 PM	rw-r--r--
📁 big	-	02/02/2024 06:09:55 PM	rwxr-xr-x
📁 bits	-	02/02/2024 06:09:55 PM	rwxr-xr-x
📄 bits.go	1.87 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 cbrt.go	2.31 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 cbrt_s390x.s	4.89 KB	02/02/2024 06:09:55 PM	rw-r--r--
📁 cmplx	-	02/02/2024 06:09:55 PM	rwxr-xr-x
📄 const.go	2.76 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 const_test.go	1.29 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 copysign.go	396 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 cosh_s390x.s	5.59 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 dim.go	1.87 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 dim_amd64.s	1.92 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 dim_arm64.s	963 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 dim_asm.go	344 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 dim_noasm.go	410 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 dim_riscv64.s	1.16 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 dim_s390x.s	1.97 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 erf.go	11.51 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 erf_s390x.s	8.5 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 erfc_s390x.s	14.4 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 erfinv.go	3.37 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 example_test.go	3.75 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 exp.go	5.38 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 exp2_asm.go	252 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 exp2_noasm.go	284 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 exp_amd64.go	261 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 exp_amd64.s	4.24 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 exp_arm64.s	5.36 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 exp_asm.go	268 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 exp_noasm.go	302 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 exp_s390x.s	4.65 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 expm1.go	7.91 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 expm1_s390x.s	5.29 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 export_s390x_test.go	732 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 export_test.go	357 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 floor.go	3.29 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 floor_386.s	1.47 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 floor_amd64.s	2 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 floor_arm64.s	573 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 floor_asm.go	431 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 floor_noasm.go	531 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 floor_ppc64x.s	499 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 floor_s390x.s	579 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 floor_wasm.s	459 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 fma.go	4.61 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 frexp.go	929 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 gamma.go	5.53 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 huge_test.go	2.91 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 hypot.go	850 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 hypot_386.s	1.81 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 hypot_amd64.s	1.05 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 hypot_asm.go	264 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 hypot_noasm.go	297 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 j0.go	13.6 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 j1.go	13.3 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 jn.go	7.18 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 ldexp.go	1.05 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 lgamma.go	11.03 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 log.go	3.86 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 log10.go	873 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 log10_s390x.s	4.73 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 log1p.go	6.34 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 log1p_s390x.s	5.15 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 log_amd64.s	3.66 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 log_asm.go	259 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 log_s390x.s	4.31 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 log_stub.go	292 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 logb.go	1021 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 mod.go	903 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 modf.go	913 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 modf_arm64.s	447 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 modf_asm.go	292 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 modf_noasm.go	326 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 modf_ppc64x.s	416 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 nextafter.go	1.21 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 pow.go	3.65 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 pow10.go	1.24 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 pow_s390x.s	16.27 KB	02/02/2024 06:09:55 PM	rw-r--r--
📁 rand	-	02/02/2024 06:09:55 PM	rwxr-xr-x
📄 remainder.go	2.04 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 signbit.go	302 bytes	02/02/2024 06:09:55 PM	rw-r--r--
📄 sin.go	6.35 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 sin_s390x.s	8.57 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 sincos.go	1.76 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 sinh.go	1.69 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 sinh_s390x.s	5.98 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 sqrt.go	4.75 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 stubs.go	2.57 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 stubs_s390x.s	12.38 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 tan.go	3.68 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 tan_s390x.s	2.72 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 tanh.go	2.66 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 tanh_s390x.s	4.57 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 trig_reduce.go	3.34 KB	02/02/2024 06:09:55 PM	rw-r--r--
📄 unsafe.go	1.27 KB	02/02/2024 06:09:55 PM	rw-r--r--

Name

Size

Modified

Perms

📁 ..

02/02/2024 06:09:55 PM

rwxr-xr-x

📄 abs.go

366 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 acos_s390x.s

3.73 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 acosh.go

1.71 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 acosh_s390x.s

4.32 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 all_test.go

86.77 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 arith_s390x.go

3.73 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 arith_s390x_test.go

10.78 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 asin.go

1.09 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 asin_s390x.s

4.16 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 asinh.go

1.92 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 asinh_s390x.s

5.74 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 atan.go

3.03 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 atan2.go

1.52 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 atan2_s390x.s

6.93 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 atan_s390x.s

3.69 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 atanh.go

1.99 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 atanh_s390x.s

5.06 KB

02/02/2024 06:09:55 PM

rw-r--r--

📁 big

02/02/2024 06:09:55 PM

rwxr-xr-x

📁 bits

02/02/2024 06:09:55 PM

rwxr-xr-x

📄 bits.go

1.87 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 cbrt.go

2.31 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 cbrt_s390x.s

4.89 KB

02/02/2024 06:09:55 PM

rw-r--r--

📁 cmplx

02/02/2024 06:09:55 PM

rwxr-xr-x

📄 const.go

2.76 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 const_test.go

1.29 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 copysign.go

396 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 cosh_s390x.s

5.59 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 dim.go

1.87 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 dim_amd64.s

1.92 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 dim_arm64.s

963 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 dim_asm.go

344 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 dim_noasm.go

410 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 dim_riscv64.s

1.16 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 dim_s390x.s

1.97 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 erf.go

11.51 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 erf_s390x.s

8.5 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 erfc_s390x.s

14.4 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 erfinv.go

3.37 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 example_test.go

3.75 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 exp.go

5.38 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 exp2_asm.go

252 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 exp2_noasm.go

284 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 exp_amd64.go

261 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 exp_amd64.s

4.24 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 exp_arm64.s

5.36 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 exp_asm.go

268 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 exp_noasm.go

302 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 exp_s390x.s

4.65 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 expm1.go

7.91 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 expm1_s390x.s

5.29 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 export_s390x_test.go

732 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 export_test.go

357 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 floor.go

3.29 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 floor_386.s

1.47 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 floor_amd64.s

2 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 floor_arm64.s

573 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 floor_asm.go

431 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 floor_noasm.go

531 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 floor_ppc64x.s

499 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 floor_s390x.s

579 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 floor_wasm.s

459 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 fma.go

4.61 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 frexp.go

929 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 gamma.go

5.53 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 huge_test.go

2.91 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 hypot.go

850 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 hypot_386.s

1.81 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 hypot_amd64.s

1.05 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 hypot_asm.go

264 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 hypot_noasm.go

297 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 j0.go

13.6 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 j1.go

13.3 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 jn.go

7.18 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 ldexp.go

1.05 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 lgamma.go

11.03 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 log.go

3.86 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 log10.go

873 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 log10_s390x.s

4.73 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 log1p.go

6.34 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 log1p_s390x.s

5.15 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 log_amd64.s

3.66 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 log_asm.go

259 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 log_s390x.s

4.31 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 log_stub.go

292 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 logb.go

1021 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 mod.go

903 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 modf.go

913 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 modf_arm64.s

447 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 modf_asm.go

292 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 modf_noasm.go

326 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 modf_ppc64x.s

416 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 nextafter.go

1.21 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 pow.go

3.65 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 pow10.go

1.24 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 pow_s390x.s

16.27 KB

02/02/2024 06:09:55 PM

rw-r--r--

📁 rand

02/02/2024 06:09:55 PM

rwxr-xr-x

📄 remainder.go

2.04 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 signbit.go

302 bytes

02/02/2024 06:09:55 PM

rw-r--r--

📄 sin.go

6.35 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 sin_s390x.s

8.57 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 sincos.go

1.76 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 sinh.go

1.69 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 sinh_s390x.s

5.98 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 sqrt.go

4.75 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 stubs.go

2.57 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 stubs_s390x.s

12.38 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 tan.go

3.68 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 tan_s390x.s

2.72 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 tanh.go

2.66 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 tanh_s390x.s

4.57 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 trig_reduce.go

3.34 KB

02/02/2024 06:09:55 PM

rw-r--r--

📄 unsafe.go

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02/02/2024 06:09:55 PM

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Editing: sin.go

package math

/*
	Floating-point sine and cosine.
*/

// The original C code, the long comment, and the constants
// below were from http://netlib.sandia.gov/cephes/cmath/sin.c,
// available from http://www.netlib.org/cephes/cmath.tgz.
// The go code is a simplified version of the original C.
//
//      sin.c
//
//      Circular sine
//
// SYNOPSIS:
//
// double x, y, sin();
// y = sin( x );
//
// DESCRIPTION:
//
// Range reduction is into intervals of pi/4.  The reduction error is nearly
// eliminated by contriving an extended precision modular arithmetic.
//
// Two polynomial approximating functions are employed.
// Between 0 and pi/4 the sine is approximated by
//      x  +  x**3 P(x**2).
// Between pi/4 and pi/2 the cosine is represented as
//      1  -  x**2 Q(x**2).
//
// ACCURACY:
//
//                      Relative error:
// arithmetic   domain      # trials      peak         rms
//    DEC       0, 10       150000       3.0e-17     7.8e-18
//    IEEE -1.07e9,+1.07e9  130000       2.1e-16     5.4e-17
//
// Partial loss of accuracy begins to occur at x = 2**30 = 1.074e9.  The loss
// is not gradual, but jumps suddenly to about 1 part in 10e7.  Results may
// be meaningless for x > 2**49 = 5.6e14.
//
//      cos.c
//
//      Circular cosine
//
// SYNOPSIS:
//
// double x, y, cos();
// y = cos( x );
//
// DESCRIPTION:
//
// Range reduction is into intervals of pi/4.  The reduction error is nearly
// eliminated by contriving an extended precision modular arithmetic.
//
// Two polynomial approximating functions are employed.
// Between 0 and pi/4 the cosine is approximated by
//      1  -  x**2 Q(x**2).
// Between pi/4 and pi/2 the sine is represented as
//      x  +  x**3 P(x**2).
//
// ACCURACY:
//
//                      Relative error:
// arithmetic   domain      # trials      peak         rms
//    IEEE -1.07e9,+1.07e9  130000       2.1e-16     5.4e-17
//    DEC        0,+1.07e9   17000       3.0e-17     7.2e-18
//
// Cephes Math Library Release 2.8:  June, 2000
// Copyright 1984, 1987, 1989, 1992, 2000 by Stephen L. Moshier
//
// The readme file at http://netlib.sandia.gov/cephes/ says:
//    Some software in this archive may be from the book _Methods and
// Programs for Mathematical Functions_ (Prentice-Hall or Simon & Schuster
// International, 1989) or from the Cephes Mathematical Library, a
// commercial product. In either event, it is copyrighted by the author.
// What you see here may be used freely but it comes with no support or
// guarantee.
//
//   The two known misprints in the book are repaired here in the
// source listings for the gamma function and the incomplete beta
// integral.
//
//   Stephen L. Moshier
//   moshier@na-net.ornl.gov

// sin coefficients
var _sin = [...]float64{
	1.58962301576546568060e-10, // 0x3de5d8fd1fd19ccd
	-2.50507477628578072866e-8, // 0xbe5ae5e5a9291f5d
	2.75573136213857245213e-6,  // 0x3ec71de3567d48a1
	-1.98412698295895385996e-4, // 0xbf2a01a019bfdf03
	8.33333333332211858878e-3,  // 0x3f8111111110f7d0
	-1.66666666666666307295e-1, // 0xbfc5555555555548
}

// cos coefficients
var _cos = [...]float64{
	-1.13585365213876817300e-11, // 0xbda8fa49a0861a9b
	2.08757008419747316778e-9,   // 0x3e21ee9d7b4e3f05
	-2.75573141792967388112e-7,  // 0xbe927e4f7eac4bc6
	2.48015872888517045348e-5,   // 0x3efa01a019c844f5
	-1.38888888888730564116e-3,  // 0xbf56c16c16c14f91
	4.16666666666665929218e-2,   // 0x3fa555555555554b
}

// Cos returns the cosine of the radian argument x.
//
// Special cases are:
//
//	Cos(±Inf) = NaN
//	Cos(NaN) = NaN
func Cos(x float64) float64 {
	if haveArchCos {
		return archCos(x)
	}
	return cos(x)
}

func cos(x float64) float64 {
	const (
		PI4A = 7.85398125648498535156e-1  // 0x3fe921fb40000000, Pi/4 split into three parts
		PI4B = 3.77489470793079817668e-8  // 0x3e64442d00000000,
		PI4C = 2.69515142907905952645e-15 // 0x3ce8469898cc5170,
	)
	// special cases
	switch {
	case IsNaN(x) || IsInf(x, 0):
		return NaN()
	}

// make argument positive
	sign := false
	x = Abs(x)

var j uint64
	var y, z float64
	if x >= reduceThreshold {
		j, z = trigReduce(x)
	} else {
		j = uint64(x * (4 / Pi)) // integer part of x/(Pi/4), as integer for tests on the phase angle
		y = float64(j)           // integer part of x/(Pi/4), as float

// map zeros to origin
		if j&1 == 1 {
			j++
			y++
		}
		j &= 7                               // octant modulo 2Pi radians (360 degrees)
		z = ((x - y*PI4A) - y*PI4B) - y*PI4C // Extended precision modular arithmetic
	}

if j > 3 {
		j -= 4
		sign = !sign
	}
	if j > 1 {
		sign = !sign
	}

zz := z * z
	if j == 1 || j == 2 {
		y = z + z*zz*((((((_sin[0]*zz)+_sin[1])*zz+_sin[2])*zz+_sin[3])*zz+_sin[4])*zz+_sin[5])
	} else {
		y = 1.0 - 0.5*zz + zz*zz*((((((_cos[0]*zz)+_cos[1])*zz+_cos[2])*zz+_cos[3])*zz+_cos[4])*zz+_cos[5])
	}
	if sign {
		y = -y
	}
	return y
}

// Sin returns the sine of the radian argument x.
//
// Special cases are:
//
//	Sin(±0) = ±0
//	Sin(±Inf) = NaN
//	Sin(NaN) = NaN
func Sin(x float64) float64 {
	if haveArchSin {
		return archSin(x)
	}
	return sin(x)
}

func sin(x float64) float64 {
	const (
		PI4A = 7.85398125648498535156e-1  // 0x3fe921fb40000000, Pi/4 split into three parts
		PI4B = 3.77489470793079817668e-8  // 0x3e64442d00000000,
		PI4C = 2.69515142907905952645e-15 // 0x3ce8469898cc5170,
	)
	// special cases
	switch {
	case x == 0 || IsNaN(x):
		return x // return ±0 || NaN()
	case IsInf(x, 0):
		return NaN()
	}

// make argument positive but save the sign
	sign := false
	if x < 0 {
		x = -x
		sign = true
	}

// map zeros to origin
		if j&1 == 1 {
			j++
			y++
		}
		j &= 7                               // octant modulo 2Pi radians (360 degrees)
		z = ((x - y*PI4A) - y*PI4B) - y*PI4C // Extended precision modular arithmetic
	}
	// reflect in x axis
	if j > 3 {
		sign = !sign
		j -= 4
	}
	zz := z * z
	if j == 1 || j == 2 {
		y = 1.0 - 0.5*zz + zz*zz*((((((_cos[0]*zz)+_cos[1])*zz+_cos[2])*zz+_cos[3])*zz+_cos[4])*zz+_cos[5])
	} else {
		y = z + z*zz*((((((_sin[0]*zz)+_sin[1])*zz+_sin[2])*zz+_sin[3])*zz+_sin[4])*zz+_sin[5])
	}
	if sign {
		y = -y
	}
	return y
}