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Math functions

List of math functions.

Table B-2 Math functions

Function   Function   Function
fabs()   acos()   acosh()
ceil()   acospi()   asinh()
fdim()   asin()   atanh()
fmax()   asinpi()   copysign()
fmin()   atan()   erfc()
mad()   atan2()   erf()
maxmag()   atanpi()   fmod()
minmag()   atan2pi()   fract()
rint()   cbrt()   frexp()
round()   cos()   hypot()
trunc()   cosh()   ilogb()
-   cospi()   ldexp()
-   exp()   lgamma()
-   exp2()   lgamma_r()
-   exp10()   log()
-   expml()   log10()
-   floor()   log1p()
-   fma()   logb()
-   log2()   modf()
-   pow()   nan()
-   pown()   nextafter()
-   powr()   remainder()
-   rsqrt()   remquo()
-   sin()   rootn()
-   sincos()   sinh()
-   sinpi()   tan()
-   sqrt()   tanh()
-   -   tanpi()
-   -   tgamma()

Note

The ulp error of lgamma() is 16ulp unless the correctly rounded result is less than one. If the correctly rounded result is less than one, lgamma() is also less than one. The error of lgamma_r() is same as lgamma().

lgamma() is logarithmic, so if the correctly rounded result is small, the precision of the result is not important.

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