Common mathematical functions
From cppreference.com
Contents |
[edit] Functions
| Defined in header
<stdlib.h> |
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| (C99)
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computes absolute value of an integral value (|x|) (function) |
| (C99)
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computes quotient and remainder of integer division (function) |
| Defined in header
<inttypes.h> |
|
| (C99)
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computes absolute value of an integral value (|x|) (function) |
| (C99)
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computes quotient and remainder of integer division (function) |
| Defined in header
<math.h> |
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Basic operations |
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| (C99)(C99)
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computes absolute value of a floating-point value (|x|) (function) |
| (C99)(C99)
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computes remainder of the floating-point division operation (function) |
| (C99)(C99)(C99)
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computes signed remainder of the floating-point division operation (function) |
| (C99)(C99)(C99)
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computes signed remainder as well as the three last bits of the division operation (function) |
| (C99)(C99)(C99)
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computes fused multiply-add operation (function) |
| (C99)(C99)(C99)
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determines larger of two floating-point values (function) |
| (C99)(C99)(C99)
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determines smaller of two floating-point values (function) |
| (C99)(C99)(C99)
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determines positive difference of two floating-point values (max(0, x-y)) (function) |
| (C99)(C99)(C99)
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returns a NaN (not-a-number) (function) |
Exponential functions |
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| (C99)(C99)
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computes e raised to the given power (ex) (function) |
| (C99)(C99)(C99)
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computes 2 raised to the given power (2x) (function) |
| (C99)(C99)(C99)
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computes e raised to the given power, minus one (ex-1) (function) |
| (C99)(C99)
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computes natural (base-e) logarithm (ln(x)) (function) |
| (C99)(C99)
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computes common (base-10) logarithm (log10(x)) (function) |
| (C99)(C99)(C99)
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computes base-2 logarithm (log2(x)) (function) |
| (C99)(C99)(C99)
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computes natural (base-e) logarithm of 1 plus the given number (ln(1+x)) (function) |
Power functions |
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| (C99)(C99)
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computes a number raised to the given power (xy) (function) |
| (C99)(C99)
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computes square root (√x) (function) |
| (C99)(C99)(C99)
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computes cubic root (3√x) (function) |
| (C99)(C99)(C99)
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computes square root of the sum of the squares of two given numbers (√x2 +y2 ) (function) |
Trigonometric functions |
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| (C99)(C99)
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computes sine (sin(x)) (function) |
| (C99)(C99)
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computes cosine (cos(x)) (function) |
| (C99)(C99)
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computes tangent (tan(x)) (function) |
| (C99)(C99)
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computes arc sine (arcsin(x)) (function) |
| (C99)(C99)
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computes arc cosine (arccos(x)) (function) |
| (C99)(C99)
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computes arc tangent (arctan(x)) (function) |
| (C99)(C99)
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computes arc tangent, using signs to determine quadrants (function) |
Hyperbolic functions |
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| (C99)(C99)
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computes hyperbolic sine (sh(x)) (function) |
| (C99)(C99)
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computes hyperbolic cosine (ch(x)) (function) |
| (C99)(C99)
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computes hyperbolic tangent (function) |
| (C99)(C99)(C99)
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computes inverse hyperbolic sine (arsinh(x)) (function) |
| (C99)(C99)(C99)
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computes inverse hyperbolic cosine (arcosh(x)) (function) |
| (C99)(C99)(C99)
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computes inverse hyperbolic tangent (artanh(x)) (function) |
Error and gamma functions |
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| (C99)(C99)(C99)
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computes error function (function) |
| (C99)(C99)(C99)
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computes complementary error function (function) |
| (C99)(C99)(C99)
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computes gamma function (function) |
| (C99)(C99)(C99)
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computes natural (base-e) logarithm of the gamma function (function) |
Nearest integer floating-point operations |
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| (C99)(C99)
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computes smallest integer not less than the given value (function) |
| (C99)(C99)
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computes largest integer not greater than the given value (function) |
| (C99)(C99)(C99)
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rounds to nearest integer not greater in magnitude than the given value (function) |
| (C99)(C99)(C99)
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rounds to nearest integer, rounding away from zero in halfway cases (function) |
| (C99)(C99)(C99)
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rounds to an integer using current rounding mode (function) |
| (C99)(C99)(C99)(C99)(C99)(C99)(C99)(C99)(C99)
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rounds to an integer using current rounding mode with exception if the result differs (function) |
Floating-point manipulation functions |
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| (C99)(C99)
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breaks a number into significand and a power of 2 (function) |
| (C99)(C99)
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multiplies a number by 2 raised to a power (function) |
| (C99)(C99)
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breaks a number into integer and fractional parts (function) |
| (C99)(C99)(C99)(C99)(C99)(C99)
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computes efficiently a number times FLT_RADIX raised to a power (function) |
| (C99)(C99)(C99)
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extracts exponent of the given number (function) |
| (C99)(C99)(C99)
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extracts exponent of the given number (function) |
| (C99)(C99)(C99)(C99)(C99)(C99)
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determines next representable floating-point value towards the given value (function) |
| (C99)(C99)(C99)
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produces a value with the magnitude of a given value and the sign of another given value (function) |
Classification and comparison |
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| (C99)
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classifies the given floating-point value (function) |
| (C99)
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checks if the given number has finite value (function) |
| (C99)
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checks if the given number is infinite (function) |
| (C99)
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checks if the given number is NaN (function) |
| (C99)
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checks if the given number is normal (function) |
| (C99)
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checks if the given number is negative (function) |
| (C99)
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checks if the first floating-point argument is greater than the second (function) |
| (C99)
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checks if the first floating-point argument is greater or equal than the second (function) |
| (C99)
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checks if the first floating-point argument is less than the second (function) |
| (C99)
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checks if the first floating-point argument is less or equal than the second (function) |
| (C99)
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checks if the first floating-point argument is less or greater than the second (function) |
| (C99)
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checks if two floating-point values are unordered (function) |
[edit] Types
| Defined in header
<stdlib.h> |
|
| structure type, return of the div function (typedef) |
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| structure type, return of the ldiv function (typedef) |
|
| (C99)
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structure type, return of the lldiv function (typedef) |
| Defined in header
<inttypes.h> |
|
| (C99)
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structure type, return of the imaxdiv function (typedef) |
| Defined in header
<math.h> |
|
| float_t
(C99)
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most efficient floating-point type at least as wide as float (typedef) |
| double_t
(C99)
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most efficient floating-point type at least as wide as double (typedef) |
[edit] Macro constants
| Defined in header
<math.h> |
|
| (C99)(C99)
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indicates value too big to be representable (infinity) by float, double and long double respectively (macro constant) |
| (C99)
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evaluates to positive infinity or the value guaranteed to overflow a float (macro constant) |
| (C99)
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evaluates to a quiet NaN of type float (macro constant) |
| (C99)(C99)(C99)
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defines the error handling mechanism used by the common mathematical functions (macro constant) |
Classification |
|
| (C99)(C99)(C99)(C99)(C99)
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indicates a floating-point category (macro constant) |
[edit] See also
|
C++ documentation for Common mathematical functions
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