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Commands - 5
ATN
Numeric Function
SYNTAX: n = ATN(m)
PURPOSE: To return the arctangent of m.
REMARKS: The result, n, of the ATN function is a value in radians in the range of –PI/2 to PI/2, where PI =
3.141593. The expression may be integer, but the evaluation is always performed in floating point.
To obtain the tangent of m when m is in degrees, use TAN (m* 180).
Trigonometric functions are computed as a power series in CAMBASIC. Calculations are done in
single precision floating point to seven digits of precision. Since the power series is an
approximation, the result will be accurate to four to six digits, depending upon the value of m.
RELATED: COS, SIN, TAN
EXAMPLE: 10 PI = 3.141593
20 RADIANS = ATN(1)
30 DEGREES = RADIANS * 180 / PI
40 PRINT RADIANS,DEGREES
RUN
.785398 45
ERROR: none
- COPYRIGHT 1
- TRADEMARKS 1
- HOW TO USE THIS MANUAL 2
- PRODUCT SUPPORT 3
- ABOUT CAMBASIC 4
- Getting Started 7
- Line Format 7
- Line Renumbering 7
- Line Labels 8
- Debugging 8
- Bit Manipulation 8
- Communications Ports 8
- Real time Multitasking 9
- Reserved Words 9
- Character Set 9
- 10 ON KEYPAD$ GOSUB 50 11
- 10 . . 12
- 10 DIM G$(100) 14
- 10 DIM TEMP(20,20) 14
- Expression Evaluation 17
- CAMBASIC EDITOR 19
- LINE EDITING COMMANDS 20
- Other Tips 24
- 10 IF A=1.23 THEN 100 25
- 10 IF A=>1.23 THEN 100 25
- PRINT ABS(7) 31
- PRINT ABS(–7) 31
- 10 F$ = "Alert" 34
- 20 PRINT ASC(F$) 34
- A = BIN(B) 37
- PRINT INP(&18) 37
- PRINT BIN(INP(&18)) 37
- PRINT BIN$(199) 38
- 11000111 38
- PRINT CHR$(65) 43
- PRINT CHR$(36,10) 43
- $$$$$$$$$$ 43
- 10 CLEAR 500 44
- 10 CLEAR 44
- CLEAR COM$ 45
- CLEAR COUNT 46
- CLEAR TICK 47
- CLEAR PULSE 48
- 10 FOR X = 0 TO 7 54
- 20 A(X) = COUNT(X) 54
- 10 A$ = "01-15-91" 56
- 20 DATE$ = A$ 56
- 20 PRINT DATE$(0) 57
- 30 PRINT DATE$(1) 57
- 02-11-91 57
- DEC & DECF 58
- DEL 10 Deletes line 10 59
- 10 DELAY .5 delays 1/2 second 60
- 10 DIM A(25), A$(30) 61
- 20 DIM B(10,10,10) 61
- Commands - 34 64
- DO/UNTIL 65
- DPEEK and DPOKE 66
- 10 GOSUB 50 68
- 50 PRINT "END"; 68
- 60 RETURN 68
- EXIT and EXIT CLEAR 72
- 10 PRINT EXP(1),EXP(2) 73
- 2.71828 7.38906 73
- Commands - 45 75
- FOR / NEXT / STEP 76
- FPEEK and FPOKE 77
- PRINT FRE(0) ; FRE(A$) 78
- 35210 100 78
- CLEAR 1000 78
- 34310 1000 78
- PRINT HEX$(127) 81
- PRINT HEX$(1280) 81
- IF / THEN / ELSE 82
- INC and INCF 83
- 10 A$ = INKEY$(1) 84
- 50 GOTO 10 84
- INP and OUT 85
- Input pH, volume? _ 86
- INPUT KEYPAD$ 87
- 10 A$="BOOHOO" 89
- 20 B$="HOO" 89
- 30 PRINT INSTR(1,A$,B$) 89
- PRINT INT(45.67) 90
- PRINT INT(–15.02) 90
- A=INT(B+0.5) 90
- 10 A$ = "Hopeless" 92
- 20 B$ = LEFT$(A$,4) 92
- 30 PRINT B$ 92
- 20 PRINT LEN(A$) 93
- 10 OUT 0,1 94
- 20 PRINT LINE(119) 94
- 10 LINE 113,ON 95
- 20 PRINT LINE(113) 95
- LOCK and UNLOCK 98
- PRINT LOG(45/7) 99
- 10 A$ = "ABCDEFG" 100
- 20 PRINT MID$(A$,5,2) 100
- NEW and UNNEW 104
- 200 ON R GOTO 150,300,320,390 105
- ON COUNT 108
- ON ERR GOTO 109
- ON KEYPAD$ 112
- 20 PRINT OPTO(0) 114
- 10 OPTO 3,ON 115
- 20 PRINT OPTO(103) 115
- PEEK and POKE 116
- PEEK$ and POKE$ 117
- PRINT USING 120
- 10 A=PULSE(2) 123
- PULSE 5,48,2,2.55,1 124
- 10 FOR X = 1 TO 9 125
- 20 READ A(X) 125
- RENUM 300,50 127
- RENUM 1000,1,20 127
- RESUME COUNT 130
- 10 ON ITR 0 GOSUB 40 131
- 30 GOTO 20 131
- 50 RETURN ITR 0 131
- 20 PRINT RIGHT$(A$,3) 132
- 10 PRINT 7/1 134
- 20 PRINT "HELLO" 134
- PRINT SIN(1.5) 136
- START BIT 137
- START COUNT 138
- START INP 139
- STOP BIT 141
- STOP COUNT 142
- STOP INP 143
- PRINT SYS(2)–SYS(1) 145
- 20 A = PEEK(N) 146
- 30 PRINT N,A,CHR$(A) 146
- 10 PRINT TAN(1.5) 148
- 10 CLEAR TICK 2 149
- 20 FOR X=0 TO 5000 : NEXT 149
- 30 PRINT TICK (2) 149
- 20 PRINT TIME$(0) 150
- 30 PRINT TIME$(1) 150
- 11:23:45 150
- 10 A$ = “01:45:12" 151
- 20 TIME$ = A$ 151
- TRON/TROFF 152
- CONFIG BAUD 156
- 10 CONFIG BAUD 1,6,5,0 157
- CONFIG BREAK 158
- CONFIG CLOCK 159
- CONFIG COM$ 160
- CONFIG COUNT 161
- CONFIG DISPLAY 162
- 163
- CONFIG Commands - 8 163
- CONFIG PIO 164
- PROGRAM DEBUGGING 165
- 90 INC H 166
- 100 RETURN 166
- Event Multitasking 170
- COM$ TASKING 171
- COUNT MULTITASKING 171
- INP TASKING 176
- KEYPAD MULTITASKING 177
- Applications Examples 178
- 250 RETURN 180
- 30 INPUT KEYPAD$ 1,A$ 180
- 40 PRINT A$ 180
- MULTITASKING ON A CLOCK TICK 181
- PULSE MULTITASKING 182
- THE CAMBASIC MINI–MONITOR 185
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