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#elisp

Function: **copysign** *x1 x2*

This function copies the sign of x2 to the value of x1 , and returns the result. x1 and x2 must be floating point.

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**GNU Emacs Lisp Reference Manual: Float Basics**

the same as x . If x is a NaN, then s is also a NaN. If x is zero, then e is 0. Function: ldexp sig &optional exp This function returns a floating-point number corresponding to the significand sig and exponent exp . <span>Function: copysign x1 x2 This function copies the sign of x2 to the value of x1 , and returns the result. x1 and x2 must be floating point. Function: logb x This function returns the binary exponent of x . More precisely, the value is the logarithm base 2 of |x|, rounded down to an integer. (logb 10) ⇒ 3 (logb

the same as x . If x is a NaN, then s is also a NaN. If x is zero, then e is 0. Function: ldexp sig &optional exp This function returns a floating-point number corresponding to the significand sig and exponent exp . <span>Function: copysign x1 x2 This function copies the sign of x2 to the value of x1 , and returns the result. x1 and x2 must be floating point. Function: logb x This function returns the binary exponent of x . More precisely, the value is the logarithm base 2 of |x|, rounded down to an integer. (logb 10) ⇒ 3 (logb

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