cxxomfort::st_math Namespace Reference

Namespace for compile-time static (template based) arithmetic operations. More...

Classes
struct	midpoint
	Defines the member value , with value of type Int that is the numeric value at the middle between a and b. More...
struct	static_abs
	Provides the member value with one of the values [-u, 0, +u] depending on the sign of u . More...
struct	static_abs_s
	Absolute value of a intmax_t . More...
struct	static_abs_u
	Absolute value of a uintmax_t . More...
struct	static_clamp
	Defines the member value which is t, constrained to the range [m,M]. More...
struct	static_intlog
	Provides the member value with the value of the logarithm of N in base Ba . More...
struct	static_intpow
	Defines the member value , of type Int and of value equal to x to the power of y . More...
struct	static_minmax2
	Defines the member values Tmin , Tmax with the minimum or maximum value between t0 and t1 . More...
struct	static_sign
	Provides the member value with the sign of template parameter T u . More...
struct	static_sign_s
	Sign of a intmax_t . More...
struct	static_sign_u
	Sign of a uintmax_t . More...

Detailed Description

Namespace for compile-time static (template based) arithmetic operations.

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Class Documentation

cxxomfort::st_math::static_sign

struct cxxomfort::st_math::static_sign

template<typename T, T u>
struct cxxomfort::st_math::static_sign< T, u >

Provides the member value with the sign of template parameter T u .

Template Parameters

u	A compile-time value of type T used as argument.

Utilities:

Compile-time sign of an integer

The helper types static_sign_s and statuc_sign_u omit the parameter types and operate on intmax_t and uintmax_t values, respectively.

int sign_neg_999 = st_math::static_sign<short,-999>::value;
int sign_1 =  st_math::static_sign_s<148000000>::value;
int sign_2 =  st_math::static_sign_u<148000000>::value;

See also static_abs .