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Function
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Meaning
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SIN(x ), COS(x ), TAN(x )
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trigonometric functions; x is an angle in radians;
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ASIN(y ), ACOS(y ), ATAN(y )
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the arc functions return values in radians
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EXP(x )
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exponential
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LN(x )
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natural logarithm
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LOG(x )
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base ten logarithm
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ABS(x )
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absolute value of x
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INT(x )
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integer part (truncated value) of x
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NINT(x )
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nearest integer value to x
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MOD(x,y )
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the remainder resulting from x/y
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LEN(a$ )
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length of the string in a$
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INDEX(a$,b$ )
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location in a$ string of b$ substring; if b$ is not in a$ , zero is returned
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VAL(a$ )
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numeric value of string a$
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SQRT(x )
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square root of x
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STR$(x )
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calculates the string corresponding to the number x using McIDAS function CFG for the conversion
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MID$(a$,x,y )
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extracts a string of length y from a$ , starting at character position x (first position = 1)
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TIME$
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a pseudostring variable of length 6 which has the current time in the format HH:MM:SS
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DATE$
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a pseudostring variable of length 7 which has the current date in the format CCYYDDD
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DAY$
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a pseudostring variable of length 6 which has the current date in the format YYMMDD
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TFILA$ . . TFILE$
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a pseudostring variable of length 9; a temporary LW file named during execution of a BASIC program; it is deleted when the program terminates; five temporary LW files are available per program execution EOF$ a pseudostring variable; contains the universal value Z80808080
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PEEK(x )
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returns a value from User Common (UC) location x ; the value in UC is assumed integer and is converted to REAL*4
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PEEK$(x )
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returns a character string
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BIN(string$ )
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the real number equivalent of the binary integer value in string$ ; assumes the first four bytes are an integer value (in binary)
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BIN$(x )
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returns an ASCII string equivalent to the integer value of x
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CHR$(x )
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returns a string of length one which is equivalent to the ASCII code value x
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KSYS(x )
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returns the value from the System KeyTable location x ; the value in SYSKEY is assumed to be an integer and is converted to REAL*4
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KSYS$(x )
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returns the value from the System KeyTable location x ; the value in SYSKEY is assumed to be a character string of length 4
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TABLE$(a$ )
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returns the value of the string stored in the current string table under the name a$
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STATUS
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numeric pseudovariable set to the value of the exit status each time a KEYIN is performed; a nonzero status usually indicates failure
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