Common mathematical functions - cppreference.com (2024)

computes absolute value of an integral value (|x|)
(function) [edit] computes quotient and remainder of integer division
(function) [edit] computes absolute value of an integral value (|x|)
(function) [edit] computes quotient and remainder of integer division
(function) [edit]

Basic operations

absolute value of a floating point value (|x|)
(function) [edit] remainder of the floating point division operation
(function) [edit] signed remainder of the division operation
(function) [edit] signed remainder as well as the three last bits of the division operation
(function) [edit] fused multiply-add operation
(function) [edit] larger of two floating-point values
(function) [edit] smaller of two floating point values
(function) [edit] positive difference of two floating point values (max(0, x-y))
(function) [edit] not-a-number (NaN)
(function) [edit]

Exponential functions

returns e raised to the given power (e^x)
(function) [edit] returns 2 raised to the given power (2^x)
(function) [edit] returns e raised to the given power, minus one (e^x-1)
(function) [edit] computes natural (base e) logarithm (ln(x))
(function) [edit] computes common (base 10) logarithm (log₁₀(x))
(function) [edit] base 2 logarithm of the given number (log₂(x))
(function) [edit] natural logarithm (to base e) of 1 plus the given number (ln(1+x))
(function) [edit]

Power functions

raises a number to the given power (x^y)
(function) [edit] computes square root (√x)
(function) [edit] computes cube root (3√x)
(function) [edit] computes square root of the sum of the squares of two or three(since C++17) given numbers (√x2
+y2
), (√x2
+y2
+z2
)(since C++17)
(function) [edit]

Trigonometric functions

computes sine (sin(x))
(function) [edit] computes cosine (cos(x))
(function) [edit] computes tangent (tan(x))
(function) [edit] computes arc sine (arcsin(x))
(function) [edit] computes arc cosine (arccos(x))
(function) [edit] computes arc tangent (arctan(x))
(function) [edit] arc tangent, using signs to determine quadrants
(function) [edit]

Hyperbolic functions

computes hyperbolic sine (sinh(x))
(function) [edit] computes hyperbolic cosine (cosh(x))
(function) [edit] computes hyperbolic tangent (tanh(x))
(function) [edit] computes the inverse hyperbolic sine (arsinh(x))
(function) [edit] computes the inverse hyperbolic cosine (arcosh(x))
(function) [edit] computes the inverse hyperbolic tangent (artanh(x))
(function) [edit]

Error and gamma functions

error function
(function) [edit] complementary error function
(function) [edit] gamma function
(function) [edit] natural logarithm of the gamma function
(function) [edit]

Nearest integer floating point operations

nearest integer not less than the given value
(function) [edit] nearest integer not greater than the given value
(function) [edit] nearest integer not greater in magnitude than the given value
(function) [edit] nearest integer, rounding away from zero in halfway cases
(function) [edit] nearest integer using current rounding mode
(function) [edit] nearest integer using current rounding mode with
exception if the result differs
(function) [edit]

Floating point manipulation functions

decomposes a number into significand and base-2 exponent
(function) [edit] multiplies a number by 2 raised to an integral power
(function) [edit] decomposes a number into integer and fractional parts
(function) [edit] multiplies a number by FLT_RADIX raised to a power
(function) [edit] extracts exponent of the number
(function) [edit] extracts exponent of the number
(function) [edit] next representable floating-point value towards the given value
(function) [edit] copies the sign of a floating point value
(function) [edit]

Classification and comparison

categorizes the given floating-point value
(function) [edit] checks if the given number has finite value
(function) [edit] checks if the given number is infinite
(function) [edit] checks if the given number is NaN
(function) [edit] checks if the given number is normal
(function) [edit] checks if the given number is negative
(function) [edit] checks if the first floating-point argument is greater than the second
(function) [edit] checks if the first floating-point argument is greater or equal than the second
(function) [edit] checks if the first floating-point argument is less than the second
(function) [edit] checks if the first floating-point argument is less or equal than the second
(function) [edit] checks if the first floating-point argument is less or greater than the second
(function) [edit] checks if two floating-point values are unordered
(function) [edit]

structure type, returned by std::div
(typedef) [edit] structure type, returned by std::ldiv
(typedef) [edit] structure type, returned by std::lldiv
(typedef) [edit] structure type, returned by std::imaxdiv
(typedef) [edit] most efficient floating-point type at least as wide as float
(typedef) [edit] most efficient floating-point type at least as wide as double
(typedef) [edit]

indicates the overflow value for float, double and long double respectively
(macro constant) [edit] evaluates to positive infinity or the value guaranteed to overflow a float
(macro constant) [edit] evaluates to a quiet NaN of type float
(macro constant) [edit] defines the error handling mechanism used by the common mathematical functions
(macro constant) [edit]

Classification

indicates a floating-point category
(macro constant) [edit]

Mathematical special functions