include "math.m";
math:= load Math Math->PATH;
cbrt, sqrt    : fn(x: real)   : real;
pow           : fn(x, y: real): real;
pow10         : fn(p: int)    : real;
hypot         : fn(x, y: real): real;
  exp, expm1, log, log10, log1p: fn(x: real): real;
  cos,  cosh,  sin,  sinh,  tan,  tanh: fn(x: real): real;
  acos, acosh, asin, asinh, atan, atanh: fn(x: real): real;
atan2         : fn(y, x: real): real;
lgamma        : fn(x: real)   :(int, real);
erf, erfc     : fn(x: real)   : real;
j0, j1, y0, y1: fn(x: real)   : real;
jn, yn        : fn(n: int, x: real): real;

The trigonometric functions use radians. The ranges of the inverse functions are:

acos	[0,]
asin	[-/2,/2]
atan	[-/2,/2]
atan2 (y, x) = arctan (y /x)	[-,]

lgamma (x)

The gamma function. The tuple returned, (s, lg) encodes the gamma function by G(x) = s *exp(lg).

The hyperbolic trigonometric functions, for example sinh, behave as expected.

erf (x)	The error function.
erfc (x)	Equivalent to 1 - erf(x).

The Bessel functions are computed by j0, j1, jn, y0, y1, and yn.

See Also