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