cplusplus reference cmath - PrivacyWall

https://cplusplus.com/reference/cmath/

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<cmath> (math.h) - C++ Users

Header <cmath> declares a set of functions to compute common mathematical operations and transformations: Bitmask value with the possible values math_errhandling can take. Each, if defined, identifies for which type fma is at least as efficient as x*y+z. The possible values returned by fpclassify. Special values the ilogb function may return.

https://en.cppreference.com/w/cpp/header/cmath

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Standard library header <cmath> - Reference

This header was originally in the C standard library as <math.h>. This header is part of the numeric library.

https://cplusplus.com/reference/cmath/floor/

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floor - C++ Users

Rounds x downward, returning the largest integral value that is not greater than x. Header <tgmath.h> provides a type-generic macro version of this function. Value to round down. The value of x rounded downward (as a floating-point value). printf ( "floor of 2.3 is %.1lf\n", floor (2.3) ); printf ( "floor of 3.8 is %.1lf\n", floor (3.8) );

https://en.cppreference.com/w/cpp/numeric/math

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Common mathematical functions - cppreference.com

Constexpr for FP environment agnostic mathematical functions in <cmath> and <cstdlib> 202306L (C++26) Constexpr for most mathematical functions in <cmath> See also. Mathematical special functions: C documentation for Common mathematical functions.

https://legacy.cplusplus.com/reference/cmath/tan/

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tan - C++ Reference - cplusplus.com

Returns the tangent of an angle of x radians. Header <tgmath.h> provides a type-generic macro version of this function. Value representing an angle, expressed in radians. One radian is equivalent to 180/PI degrees. Tangent of x radians. double param, result; param = 45.0; result = tan ( param * PI / 180.0 );

https://cplusplus.com/reference/?sid=JJ2828

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Reference - C++ Users

Provides functionality to use an abstraction called streams specially designed to perform input and output operations on sequences of character, like files or strings. Work is under progress to update the whole reference to the latest standard. To check the status of each header, see Update progress.

https://cplusplus.com/reference/cmath/atan2/

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atan2 - C++ Users

Returns the principal value of the arc tangent of y/x, expressed in radians. To compute the value, the function takes into account the sign of both arguments in order to determine the quadrant. In C++, this function is overloaded in <valarray> (see valarray atan2). Header <tgmath.h> provides a type-generic macro version of this function.

https://cplusplus.com/reference/cmath/pow/

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pow - C++ Users

Header <tgmath.h> provides a type-generic macro version of this function. Base value. Exponent value. The result of raising base to the power exponent. If the base is finite negative and the exponent is finite but not an integer value, it causes a domain error.

https://cplusplus.com/reference/cmath/exp/

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exp - C++ Users

printf ("The exponential value of %f is %f.\n", param, result ); return 0; The exponential value of 5.000000 is 148.413159.

https://cplusplus.com/reference/cmath/fma/

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fma - C++ Users

Returns x * y + z. The function computes the result without losing precision in any intermediate result. For arguments of type double, it generally executes about as fast as, or faster than, x*y+z. For arguments of type float, it generally executes about as fast as, or faster than, x*y+z.

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