Showing content from https://cplusplus.com/reference/cmath/ below:
header
<cmath> (math.h)
C numerics library
Header <cmath>
declares a set of functions to compute common mathematical operations and transformations:
Functions
Trigonometric functions
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cos
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Compute cosine (function)
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sin
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Compute sine (function)
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tan
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Compute tangent (function)
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acos
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Compute arc cosine (function)
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asin
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Compute arc sine (function)
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atan
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Compute arc tangent (function)
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atan2
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Compute arc tangent with two parameters (function)
Hyperbolic functions
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cosh
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Compute hyperbolic cosine (function)
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sinh
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Compute hyperbolic sine (function)
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tanh
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Compute hyperbolic tangent (function)
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acosh
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Compute area hyperbolic cosine (function)
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asinh
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Compute area hyperbolic sine (function)
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atanh
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Compute area hyperbolic tangent (function)
Exponential and logarithmic functions
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exp
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Compute exponential function (function)
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frexp
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Get significand and exponent (function)
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ldexp
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Generate value from significand and exponent (function)
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log
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Compute natural logarithm (function)
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log10
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Compute common logarithm (function)
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modf
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Break into fractional and integral parts (function)
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exp2
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Compute binary exponential function (function)
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expm1
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Compute exponential minus one (function)
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ilogb
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Integer binary logarithm (function)
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log1p
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Compute logarithm plus one (function)
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log2
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Compute binary logarithm (function)
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logb
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Compute floating-point base logarithm (function)
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scalbn
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Scale significand using floating-point base exponent (function)
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scalbln
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Scale significand using floating-point base exponent (long) (function)
Power functions
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pow
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Raise to power (function)
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sqrt
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Compute square root (function)
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cbrt
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Compute cubic root (function)
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hypot
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Compute hypotenuse (function)
Error and gamma functions
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erf
-
Compute error function (function)
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erfc
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Compute complementary error function (function)
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tgamma
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Compute gamma function (function)
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lgamma
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Compute log-gamma function (function)
Rounding and remainder functions
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ceil
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Round up value (function)
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floor
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Round down value (function)
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fmod
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Compute remainder of division (function)
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trunc
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Truncate value (function)
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round
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Round to nearest (function)
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lround
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Round to nearest and cast to long integer (function)
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llround
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Round to nearest and cast to long long integer (function)
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rint
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Round to integral value (function)
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lrint
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Round and cast to long integer (function)
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llrint
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Round and cast to long long integer (function)
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nearbyint
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Round to nearby integral value (function)
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remainder
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Compute remainder (IEC 60559) (function)
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remquo
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Compute remainder and quotient (function)
Floating-point manipulation functions
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copysign
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Copy sign (function)
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nan
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Generate quiet NaN (function)
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nextafter
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Next representable value (function)
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nexttoward
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Next representable value toward precise value (function)
Minimum, maximum, difference functions
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fdim
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Positive difference (function)
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fmax
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Maximum value (function)
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fmin
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Minimum value (function)
Other functions
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fabs
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Compute absolute value (function)
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abs
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Compute absolute value (function)
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fma
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Multiply-add (function)
Macros / Functions These are implemented as macros in C and as functions in C++:
Classification macro / functions
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fpclassify
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Classify floating-point value (macro/function)
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isfinite
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Is finite value (macro)
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isinf
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Is infinity (macro/function)
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isnan
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Is Not-A-Number (macro/function)
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isnormal
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Is normal (macro/function)
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signbit
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Sign bit (macro/function)
Comparison macro / functions
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isgreater
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Is greater (macro)
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isgreaterequal
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Is greater or equal (macro)
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isless
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Is less (macro)
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islessequal
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Is less or equal (macro)
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islessgreater
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Is less or greater (macro)
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isunordered
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Is unordered (macro)
Macro constants
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math_errhandling
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Error handling (macro)
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INFINITY
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Infinity (constant)
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NAN
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Not-A-Number (constant)
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HUGE_VAL
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Huge value (constant)
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HUGE_VALF
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Huge float value
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HUGE_VALL
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Huge long double value (constant)
This header also defines the following macro constants (since C99/C++11):
Types
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double_t
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Floating-point type (type)
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float_t
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Floating-point type (type)
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