Common mathematical functions
From cppreference.com
Contents |
[edit] Functions
Defined in header <cmath>
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Basic operations | |
(C++11) |
computes absolute value of an integral value (|x|) (function) |
absolute value of a floating point value (|x|) (function) | |
(C++11) |
the quotient and remainder of integer division (function) |
remainder of the floating point division operation (function) | |
(C++11) |
signed remainder of the division operation (function) |
(C++11) |
signed remainder as well as the three last bits of the division operation (function) |
(C++11) |
fused multiply-add operation (function) |
(C++11) |
larger of two floating point values (function) |
(C++11) |
smaller of two floating point values (function) |
(C++11) |
positive difference of two floating point values (max(0, x-y)) (function) |
(C++11) (C++11) (C++11) |
not-a-number (NaN) (function) |
Exponential functions | |
returns e raised to the given power (ex) (function) | |
(C++11) |
returns 2 raised to the given power (2x) (function) |
(C++11) |
returns e raised to the given power, minus one (ex-1) (function) |
computes natural (base e) logarithm (to base e) (ln(x)) (function) | |
computes common (base 10) logarithm (log10(x)) (function) | |
(C++11) |
natural logarithm (to base e) of 1 plus the given number (function) |
(C++11) |
base 2 logarithm of the given number (function) |
Power functions | |
computes square root (√x) (function) | |
(C++11) |
computes cubic root (3√x) (function) |
(C++11) |
computes square root of the sum of the squares of two given numbers (√x2 +y2 ) (function) |
raises a number to the given power (xy) (function) | |
Trigonometric functions | |
computes sine (sin(x)) (function) | |
computes cosine (cos(x)) (function) | |
computes tangent (tan(x)) (function) | |
computes arc sine (arcsin(x)) (function) | |
computes arc cosine (arccos(x)) (function) | |
computes arc tangent (arctan(x)) (function) | |
arc tangent, using signs to determine quadrants (function) | |
Hyperbolic functions | |
computes hyperbolic sine (sh(x)) (function) | |
computes hyperbolic cosine (ch(x)) (function) | |
hyperbolic tangent (function) | |
(C++11) |
hyperbolic arc sine (function) |
(C++11) |
hyperbolic arc cosine (function) |
(C++11) |
hyperbolic arc tangent (function) |
Error and gamma functions | |
(C++11) |
error function (function) |
(C++11) |
complementary error function (function) |
(C++11) |
natural logarithm of the gamma function (function) |
(C++11) |
gamma function (function) |
Nearest integer floating point operations | |
nearest integer not less than the given value (function) | |
nearest integer not greater than the given value (function) | |
(C++11) |
nearest integer not greater in magnitude than the given value (function) |
(C++11) (C++11) (C++11) |
nearest integer, rounding away from zero in halfway cases (function) |
(C++11) |
nearest integer using current rounding mode (function) |
(C++11) (C++11) (C++11) |
nearest integer using current rounding mode with exception if the result differs (function) |
Floating point manipulation functions | |
decomposes a number into significand and a power of 2 (function) | |
multiplies a number by 2 raised to a power (function) | |
decomposes a number into integer and fractional parts (function) | |
(C++11) (C++11) |
multiplies a number by FLT_RADIX raised to a power (function) |
(C++11) |
extracts exponent of the number (function) |
(C++11) |
extracts exponent of the number (function) |
(C++11) (C++11) |
next representable floating point value towards the given value (function) |
(C++11) |
copies the sign of a floating point value (function) |
Classification | |
(C++11) |
categorizes the given floating point value (function) |
(C++11) |
checks if the given number has finite value (function) |
(C++11) |
checks if the given number is infinite (function) |
(C++11) |
checks if the given number is NaN (function) |
(C++11) |
checks if the given number is normal (function) |
(C++11) |
checks if the given number is negative (function) |
[edit] Types
Defined in header <cmath>
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float_t | most efficient floating-point type at least as wide as float |
double_t | most efficient floating-point type at least as wide as double |
Defined in header <cstdlib>
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div_t | structure type, return of the std::div function |
ldiv_t | structure type, return of the std::ldiv function |
lldiv_t | structure type, return of the std::lldiv function |
Defined in header <cinttypes>
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imaxdiv_t | structure type, return of the std::imaxdiv function |
[edit] Macro constants
Defined in header <cmath>
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(C++11) (C++11) |
indicates the overflow value for float, double and long double respectively (macro constant) |
(C++11) |
evaluates to positive infinity or the value guaranteed to overflow a float (macro constant) |
(C++11) |
evaluates to a quiet NaN of type float (macro constant) |
(C++11) (C++11) (C++11) |
defines the error handling mechanism used by the common mathematical functions (macro constant) |
Classification | |
(C++11) (C++11) (C++11) (C++11) (C++11) |
indicates a floating-point category (macro constant) |
Defined in header <cfloat>
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(C++11) |
specifies which types are aliased to float_t and double_t (macro constant) |