Proposal for "Math_Assoc"
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// WHAT IS MATH_ASSOC? // MATH_ASSOC is a PHP class, that can: // 1. calculate any math expression // 2. calculate quadratic,biquadratic and equations with 1 root // 3. check numbers (prime,negative,positive,null) // 4. find greatest/least common multiple/divisor // 5. convert units/measures // 6. manipulate dates // //MATH_ASSOC syntax /* # {number} square root # 6^2 six of the second degree (returns 36) # 5%2 returns the remainder of 5/2 (returns 1) !!! ALL OTHER OPERATIONS HAVE THE SAME SYNTAX LIKE PHP (*+-/()) !!! */ //building a form using MATH_ASSOC class /* <? if($_POST['submit']) { $this->exec($_POST['str']); } ?> <form method="post" name="equ" action="<? echo $_SERVER[PHP_SELF]; ?>"> <input type="text" id="str" name="str" value="<? echo $_POST[str]; ?>" size="30"/> <input class="mstr" type="submit" name="submit" value="Go!"/> <input type="reset" onClick="javascript:decision('Do you really want to reset?','<? echo $_SERVER[PHP_SELF]; ?>');"/> </form> */ //main functions # $math_assoc->view(); echoes an example form that includes all the features of the class. # echo $math_assoc->exec("x^2+x+2=0"); echoes full solution of quadratic or biquadratic equation # echo $math_assoc->exec("2x+3=6"); echoes full solution of the equation with 1 root # echo $math_assoc->compute("2x+3=6"); returns the answer of the equation with 1 root # echo $math_assoc->compute("2x+3=6","x"); returns the same as above # echo $math_assoc->compute("{5^5}"); returns short answer 5 # echo $math_assoc->compute("x^2+x+2=0","d"); returns the discriminant of the equation //additional simple math functions # echo $math_assoc->flip_sign($num); multiples $num by (-1) # echo $math_assoc->is_positive($num); returns true or false # echo $math_assoc->is_negative($num); returns true or false # echo $math_assoc->is_null($num); returns true or false //additional checkup functions # echo $math_assoc->isPrime("2+1"); returns boolean true if prime; if($math_assoc->isPrime("2+2")==true) { ... } else { ... } # echo $math_assoc->gcm(12,24); returns the greatest common multiple of two numbers # echo $math_assoc->gcm_nums( array(12, 24, 48) ); returns the greatest common multiple of more then two numbers # echo $math_assoc->lcm(12,4); returns the least common multiple of two numbers # echo $math_assoc->lcm_nums( array(6, 10, 4, 9, 54) ); returns the least common multiple of more than two numbers # echo $math_assoc->gcd_(6,12); returns the greatest common divisor of two numbers # echo $math_assoc->gcd_nums( array(6, 12) ); returns the greatest common divisor of more then two numbers // romanic system # echo $math_assoc->arabic2romanic("24"); returns a romanic number # echo $math_assoc->arabic2romanic("{21+4}"); it calculates, and then returns a romanic number # echo $math_assoc->romanic2arabic("XXIV"); returns an arabic number, if an arabic one is given //"convert" examples //date manipulator |
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