HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 173
Test functions
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hp40g+.book Page 19 Friday, December 9, 2005 1:03 AM Test functions AND IFTE NOT OR The test functions are logical operators that always return either a 1 (true) or a 0 (false). Less than. Returns 1 if true, 0 if false. value1< value2 Less than or equal to. Returns 1 if true, 0 if false. value1≤ value2 Equals (logical test). Returns 1 if true, 0 if false. value1= = value2 Not equal to. Returns 1 if true, 0 if false. value1≠ value2 Greater than. Returns 1 if true, 0 if false. value1> value2 Greater than or equal to. Returns 1 if true, 0 if false. value1≥ value2 Compares value1 and value2. Returns 1 if they are both non-zero, otherwise returns 0. value1 AND value2 If expression is true, do the trueclause; if not, do the falseclause. IFTE(expression, trueclause, falseclause) Example IFTE(X>0,X2,X3) Returns 1 if value is zero, otherwise returns 0. NOT value Returns 1 if either value1 or value2 is non-zero, otherwise returns 0. value1 OR value2 Using mathematical functions 13-19