| 1 | / |
| 2 | / |
| 3 | / D C O S |
| 4 | / - - - - |
| 5 | / |
| 6 | /SUBROUTINE DCOS(X) |
| 7 | / |
| 8 | / VERSION 5A 4-27-77 PT |
| 9 | / |
| 10 | SECT DCOS |
| 11 | JA #DCOS |
| 12 | DPCHK |
| 13 | TEXT +DCOS + |
| 14 | COSXR, SETX XRCOS |
| 15 | SETB BPCOS |
| 16 | BPCOS, FNOP |
| 17 | 0 |
| 18 | 0 |
| 19 | 0 |
| 20 | 0 |
| 21 | 0 |
| 22 | XRCOS, F 0.0 |
| 23 | F 0.0 |
| 24 | COS1, F 0.0 |
| 25 | F 0.0 |
| 26 | FPI2CS, 1 /PI DIVIDED BY 2 |
| 27 | 3110 |
| 28 | 3755 |
| 29 | 2421 |
| 30 | 0264 |
| 31 | 3016 |
| 32 | ORG 10*3+BPCOS |
| 33 | FNOP |
| 34 | JA COSXR |
| 35 | 0 |
| 36 | COSRTN, JA . |
| 37 | BASE 0 |
| 38 | #DCOS, STARTD |
| 39 | FLDA 10*3 |
| 40 | FSTA COSRTN |
| 41 | FLDA 0 |
| 42 | SETX XRCOS |
| 43 | SETB BPCOS |
| 44 | BASE BPCOS |
| 45 | LDX 1,1 |
| 46 | FSTA BPCOS |
| 47 | FLDA% BPCOS,1 /ADDR OF X |
| 48 | FSTA BPCOS |
| 49 | STARTE |
| 50 | FLDA% BPCOS /GET X |
| 51 | FADD FPI2CS /ADD IN PI OVER 2 |
| 52 | FSTA COS1 |
| 53 | EXTERN DSIN |
| 54 | JSR DSIN /AND CALL THE SIN |
| 55 | JA COSRTN |
| 56 | JA COS1 |
| 57 | \f |