sine approx. using sse2

[clive]

64-bit mantissa, 19.266 decimal digits of precision.

0.6366197723675813430760000

0.63661 97723 67581 34307 60000

3FFEA2F9836E4E44152Ar

3FFE A2F9 836E 4E44 152A r

Though it doesn't come out cleanly as base-10, looks like you did the same test

0 A2F9836E 4E44152A
.
6 5DBF224F 0EA8D3A4
3 A9775716 92984468
6 9EA966E1 B9F2AC10
6 329E04D1 437AB8A0
1 FA2C302C A2CB3640
9 C5B9E1BE 5BF01E80
7 B942D16F 97613100
7 3C9C2E5B E9CBEA00
2 5E19CF97 21F72400
3 AD021BE7 53A76800
6 C2151709 448A1000
7 94D2E65C AD64A000
5 D03CFF9E C5EE4000
8 2261FC33 BB4E8000
1 57D3DA05 51110000
3 6E468435 2AAA0000
4 4EC12A13 AAA40000
3 138BA4C4 AA680000
0 C3746FAE A8100000
7 A28C5CD2 90A00000
6 597BA039 A6400000
3 7ED44240 7E800000
4 F44A9684 F1000000
9 8AE9E131 6A000000
5 6D22CBEE 24000000
4 435BF74D 68000000
2 A197A906 10000000
6 4FEC9A3C A0000000
3 1F3E065E 40000000
1 386C3FAE 80000000
2 343A7CD1 00000000
2 0A48E02A 00000000
0 66D8C1A4 00000000
4 04779068 00000000
0 2CABA410 00000000
1 BEB468A0 00000000
7 730C1640 00000000
4 7E78DE80 00000000
4 F0B8B100 00000000
9 6736EA00 00000000
4 08252400 00000000
0 51736800 00000000
3 2E821000 00000000
1 D114A000 00000000
8 2ACE4000 00000000
1 AC0E8000 00000000
6 B8910000 00000000
7 35AA0000 00000000
2 18A40000 00000000
0 F6680000 00000000
9 A0100000 00000000
6 40A00000 00000000
2 86400000 00000000
5 3E800000 00000000
2 71000000 00000000
4 6A000000 00000000
4 24000000 00000000
1 68000000 00000000
4 10000000 00000000
0 A0000000 00000000
6 40000000 00000000
2 80000000 00000000
5 00000000 00000000
   63 decimal places
0.636619772367581343076349542631220401744940318167209625244140625

[BasilYercin]

64-bit mantissa, 19.266 decimal digits of precision.

[dedndave]

that's ~ $1.93 here in the states   :bg