asinh Inverse hyperbolic sine &reftitle.description; floatasinh floatarg Returns the inverse hyperbolic sine of arg, i.e. the value whose hyperbolic sine is arg. &reftitle.parameters; arg The argument to process &reftitle.returnvalues; The inverse hyperbolic sine of arg &reftitle.changelog; &Version; &Description; 5.3.0 This function is now available on all platforms &reftitle.seealso; sinh asin acosh atanh