Argox PA-20 Basic Programming Manual User Manual download pdf (Page 18)

PT-Basic Programming Manual Ver. 1.00 17/143

SGN

Purpose：

To return an indication of the mathematical sign (+ or -) of a

given numeric expression.

Syntax：

A% = SGN(N%) or A% = SGN(N!)

Example：

A% = SGN(9.86)

PRINT A%

B% = SGN(-5.68)

PRINT B%

B% = SGN(0)

PRINT B%

Description：

N% or N! is a numeric expression,it can be an integer or a

real number.

A% is an integer variable to be assigned to the result.

Meaning

N% >0

N% =0

-1

N% <0

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 142 143

PA-20/PA-2010 1
PA-21/PA-2110 Basic 1
Programming Manual 1
Preface 2
Table of Contents 3
3/143 4
4/143 5
1 How to run BASIC program 6
6/143 7
Information 8
2 Program Structure 9
Array Variables 10
Assignment Operator 11
Arithmetic Operator 11
Relational Operator 11
Logical Operator 11
2.4 Operator Precedence 12
2.5 Labels 12
2.6 Subroutines 13
2.7 Exit program 14
2.8 Special notes 14
3 Command Sets 15
15/143 16
SET_PRECISION 17
17/143 18
18/143 19
ON … GOSUB … 20
ON … GOTO … 21
FOR … NEXT 22
WHILE … WEND 23
23/143 24
24/143 25
TRIM_LEFT$ 26
TRIM_RIGHT$ 26
26/143 27
27/143 28
STRING$ 29
OFF ALL 30
OFF ESC 30
OFF COM 30
OFF HOUR 31
OFF KEY 31
OFF MINUTE 32
OFF READER 32
OFF TIMER 33
ON COM GOSUB 33
ON ESC GOSUB 34
ON HOUR GOSUB 34
ON KEY GOSUB 35
ON MINUTE GOSUB 35
ON READER GOSUB 36
ON TIMER GOSUB 37
37/143 38
38/143 39
3.6 System commands 40
40/143 41
POWER_ON 42
RESTART 42
SYSTEM_INFORMATION 42
SYS_SUSPEND 43
CHECK_AID 43
3.7 Reader commands 44
SLEEP_READER 45
GET_READER_DATA$ 45
GET_READER_DATALEN 46
READER_CONFIG_START 46
READER_CONFIG_END 46
READER_SENDCMD 47
READER_SENDCMD_LASER 47
READER_QUERY$ 48
READER_QUERY_LASER$ 48
48/143 49
SIM_SCANKEY_PRESS 50
READER_SETFROMFILE 50
3.8 Beeper commands 51
SET_BUZZER_VOL 52
DAY_OF_WEEK 53
53/143 54
3.10 LED Command 55
3.11 Keypad commands 56
INPUT_S 57
INPUT_S_ CARRYENT 58
INPUT_S_VIBRATE 58
INPUT_S_SLEEP 59
INPUT_MODE 59
KEY_CLICK 59
ALPHA_LOCK 60
GET_ALPHA_LOCK 60
GET_KEY_CLICK 60
KEYPAD_BL_TIMER 61
KEYPAD_BL 61
DEF_PKEY 62
SCANKEYPWON 63
GET_SCANKEYPWON 63
3.12 LCD Commands 64
CURSOR_Y 65
FILL_RECT 65
ICON_ZONE_PRINT 66
CLR_RECT 66
SHOW_IMAGE 67
CLR_EOL 67
3.13 Font 68
DISPFONT_INFO_WIDTH 69
3.14 TextBlock 70
3.14.1 TextBlock commands 71
DEFINETEXTBLOCK_COLOR 71
DEFINETEXTBLOCK_IMAGE 72
SETTEXTBLOCK 73
RESETTEXTBLOCK 73
PRINTTEXTBLOCK 73
GETTEXTBLOCKCUR_X 73
GETTEXTBLOCKCUR_Y 74
SETTEXTBLOCKCUR 74
SHOWTEXTBLOCKCURSOR 74
TEXTBLOCK_SETBGCOLOR 74
TEXTBLOCK_SETBGIMAGE 75
TEXTBLOCK_MODE 75
SWITCHTEXTBLOCK 75
Standard Commands 76
OPENOUT 77
77/143 78
BGETEXT 79
79/143 80
80/143 81
GET_FILE_ERROR 82
DBMS Commands 83
DBMS_INIT_SEARCH 83
DBMS_INIT_SEARCHADV 84
DBMS_CLOSE_SEARCH 85
DBMS_APPEND_DATA 85
DBMS_DEL_DATA 86
DBMS_EMPTY 86
DBMS_FIND_RECORD 86
DBMS_FIND_RECORD_B 86
DBMS_GET_COUNT 87
DBMS_GET_DATA$ 87
DBMS_UPDATE_DATA 87
3.16 Vibrator commands 88
CLOSE_COM 89
OPEN_COM 89
SET_COM 89
READ_COM$ 90
WRITE_COM 91
GET_CTS 91
SET_RTS 92
CLEAR_COM 92
COM_DELIMITER 92
FILE_TRANS 93
FILE_TRANS_REALTIME 93
FILE_TRANS_BAUD 94
FILE_TRANS_INTERFACE 94
3.18 Memory commands 95
BT_START 96
BT_STOP 96
BT_OPEN 97
BT_CLOSE 97
BT_WRITE 97
97/143 98
BT_READ$ 99
BT_GETLOCALINFO$ 99
99/143 100
BT_SETLOCALSET 101
BT_INQUIRY 101
BT_GETDEVICEINFO 102
BT_DISCONNECTALERT 102
GET_BT_ERROR 103
3.20 USB commands 104
COPYFILETOPDT 105
BACKUPDATAFILETOPC 105
SIM_SETSCANNERTYPE 105
4 Appendices 106
106/143 107
107/143 108
Commands for event trapping 109
System commands 109
Reader commands 110
Buzzer commands 110
Calendar and timer commands 110
LED command 111
Keypad commands 111
LCD Commands 112
User font commands 112
TextBlock commands 113
File manipulation commands 114
Vibrator commands 115
Communication port commands 115
Memory commands 115
Bluetooth commands 116
USB commands 116
Appendix B 117
117/143 118
118/143 119
119/143 120
120/143 121
121/143 122
122/143 123
123/143 124
124/143 125
125/143 126
126/143 127
127/143 128
128/143 129
129/143 130
130/143 131
131/143 132
Appendix C 133
133/143 134
134/143 135
135/143 136
136/143 137
137/143 138
138/143 139
139/143 140
Note1: 141
141/143 142
Appendix D 143
Parameter for Color 143

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