This header was originally in the C standard library as <math.h>.
This header is part of the numeric library.
| (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) |
| float_t
(C++11)
| most efficient floating-point type at least as wide as float (typedef) |
| double_t
(C++11)
| most efficient floating-point type at least as wide as double (typedef) |
Basic operations |
|
| absolute value of a floating point value (|x|) (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)
| base 2 logarithm of the given number (log2(x)) (function) |
| (C++11)
| natural logarithm (to base e) of 1 plus the given number (ln(1+x)) (function) |
Power functions |
|
| raises a number to the given power (xy) (function) |
|
| 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) |
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) |
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| 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)
| computes the inverse hyperbolic sine (arsinh(x)) (function) |
| (C++11)
| computes the inverse hyperbolic cosine (arcosh(x)) (function) |
| (C++11)
| computes the inverse hyperbolic tangent (artanh(x)) (function) |
Error and gamma functions |
|
| (C++11)
| error function (function) |
| (C++11)
| complementary error function (function) |
| (C++11)
| gamma function (function) |
| (C++11)
| natural logarithm of the 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 and comparison |
|
| (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) |
| (C++11)
| checks if the first floating-point argument is greater than the second (function) |
| (C++11)
| checks if the first floating-point argument is greater or equal than the second (function) |
| (C++11)
| checks if the first floating-point argument is less than the second (function) |
| (C++11)
| checks if the first floating-point argument is less or equal than the second (function) |
| (C++11)
| checks if the first floating-point argument is less or greater than the second (function) |
| (C++11)
| checks if two floating-point values are unordered (function) |
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