Php expm1
From w3cyberlearnings
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PHP function expm1
This function returns exp(X)-1, and this function can provide more accurate result even the value of X is close to zero.
Syntax expm1
X is a number.
expm1(X);
Example 1
<?php echo expm1(1/2); echo "<br/>"; echo expm1(1/5); ?>
Output
0.64872127070013 0.22140275816017
