µVision4 User's Guide

__asin

Summary	double __asin ( double x); /* number to calculate arc sine of */
Description	The __asin debugger function calculates the arc sine of the floating-point number x. The value of x must be between -1 and 1. The floating-point value returned by __asin is a number in the -π/2 to π/2 range.
Return Value	The __asin function returns the arc sine of x.
Example	> __asin(0.3);

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