Texas Instruments TI89TITANIUM User Manual - Page 832
inString, intDiv, integrate, iPart, isArchiv, isClkOn, Returns the signed integer part of argument 1
UPC - 033317191833
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inString( ) MATH/String menu inString(srcString, subString[, start]) ⇒ integer Returns the character position in string srcString at which the first occurrence of string subString begins. start, if included, specifies the character position within srcString where the search begins. Default = 1 (the first character of srcString). inString("Hello there","the") ¸ 7 "ABCEFG"! s1:If inString(s1, "D")=0:Disp "D not found." ¸ D not found. If srcString does not contain subString or start is > the length of srcString, returns zero. int( ) CATALOG int(expression) ⇒ integer int(list1) ⇒ list int(matrix1) ⇒ matrix Returns the greatest integer that is less than or equal to the argument. This function is identical to floor(). int(ë 2.5) ¸ ë 3. int([-1.234,0,0.37]) ¸ [-2. 0 0.] The argument can be a real or a complex number. For a list or matrix, returns the greatest integer of each of the elements. intDiv() CATALOG intDiv(number1, number2) ⇒ integer intDiv(list1, list2) ⇒ list intDiv(matrix1, matrix2) ⇒ matrix Returns the signed integer part of argument 1 divided by argument 2. For lists and matrices returns the signed integer part of argument 1 divided by argument 2 for each element pair. intDiv(ë 7,2) ¸ ë3 intDiv(4,5) ¸ 0 intDiv({12,ë 14,ë 16},{5,4,ë 3}) ¸ {2 ë 3 5} integrate See ‰(), page 907. iPart( ) MATH/Number menu iPart(number) ⇒ integer iPart(list1) ⇒ list iPart(matrix1) ⇒ matrix Returns the integer part of the argument. iPart(ë 1.234) ¸ ë 1. iPart({3/2,ë 2.3,7.003}) ¸ {1 ë 2. 7.} For lists and matrices, returns the integer part of each element. The argument can be a real or a complex number. isArchiv() CATALOG isArchiv(var_name) ⇒ true,false isArchiv(PROG1) ¸ True Determines if var_name is archived or not. Returns true if var_name is archived. Returns false if var_name is not archived. isClkOn() CATALOG isClkOn() ⇒ true,false Determines if the clock is ON or OFF. Returns true if the clock is ON. Returns false if the clock is OFF. 832 Appendix A: Functions and Instructions