projects / pdp8.git / blame
| Commit | Line | Data |
|---|---|---|
| 81e70d48 PH |
1 | / |
| 2 | / C S Q R T | |
| 3 | / - - - - - | |
| 4 | / | |
| 5 | / VERSION 5A 4-27-77 PT | |
| 6 | / | |
| 7 | /COMPLEX SQUARE ROOT ROUTINE | |
| 8 | /ENTER+ EXIT IN COMPLEX | |
| 9 | /Z=X+IX | |
| 10 | / | |
| 11 | /SQRT(Z)=SQRT(R)*COS(THETA)+SIN(THETA)) | |
| 12 | / | |
| 13 | /R=SQRT(X*X+Y*Y) | |
| 14 | /THETA=ATAN2(Y/X)/2 | |
| 15 | / | |
| 16 | /CALLS SQRT,ATAN2,SIN,COS | |
| 17 | / | |
| 18 | SECT CSQRT | |
| 19 | JA #CSQRT | |
| 20 | DPCHK | |
| 21 | TEXT +CSQRT + | |
| 22 | CSQRTX, SETX XR | |
| 23 | SETB BP | |
| 24 | JA .+3 | |
| 25 | BP, F 0.0 | |
| 26 | XR, F 0.0 | |
| 27 | ARG, F 0.0 | |
| 28 | F 0.0 | |
| 29 | THETA, F 0.0 | |
| 30 | FP2, F 2.0 | |
| 31 | ORG 10*3+BP | |
| 32 | FNOP | |
| 33 | JA CSQRTX | |
| 34 | 0 | |
| 35 | RT, JA . | |
| 36 | BASE 0 | |
| 37 | #CSQRT, STARTD | |
| 38 | FLDA 10*3 | |
| 39 | FSTA RT | |
| 40 | FLDA 0 | |
| 41 | SETB BP | |
| 42 | SETX XR | |
| 43 | BASE BP | |
| 44 | LDX 1,1 | |
| 45 | FSTA BP | |
| 46 | FLDA% BP,1 | |
| 47 | FSTA BP | |
| 48 | STARTE | |
| 49 | FLDA% BP | |
| 50 | FSTA ARG | |
| 51 | STARTF | |
| 52 | EXTERN ATAN2 | |
| 53 | JSR ATAN2 /ATAN(Y/X) | |
| 54 | JA CSA | |
| 55 | JA ARG+3 | |
| 56 | JA ARG | |
| 57 | CSA, FDIV FP2 /ATAN/2 | |
| 58 | FSTA THETA | |
| 59 | FLDA ARG | |
| 60 | FMULM ARG /X*X | |
| 61 | FLDA ARG+3 | |
| 62 | FMUL ARG+3 /Y*Y | |
| 63 | FADD ARG /X*X+Y*Y | |
| 64 | FSTA ARG | |
| 65 | EXTERN SQRT /SQRT(X*X+Y*Y) | |
| 66 | JSR SQRT | |
| 67 | JA CSB | |
| 68 | JA ARG | |
| 69 | CSB, FSTA ARG /R | |
| 70 | EXTERN SQRT | |
| 71 | JSR SQRT | |
| 72 | JA CSC | |
| 73 | JA ARG /SQRT(R) | |
| 74 | CSC, FSTA ARG /SQRT(R) | |
| 75 | EXTERN SIN | |
| 76 | JSR SIN /SIN(THETA/2) | |
| 77 | JA CSD | |
| 78 | JA THETA | |
| 79 | CSD, FMUL ARG /*SQRT(X) | |
| 80 | FSTA ARG+3 | |
| 81 | EXTERN COS | |
| 82 | JSR COS /COS(THETA/2)*SQRT(R) | |
| 83 | JA CSE | |
| 84 | JA THETA | |
| 85 | CSE, FMUL ARG | |
| 86 | FSTA ARG | |
| 87 | STARTE | |
| 88 | FLDA ARG | |
| 89 | FSTA #CAC | |
| 90 | JA RT | |
| 91 | EXTERN #CAC | |
| 92 | \f |