Some functions ...
plot(sin(-x)*pow(1.5,-r))
plot(pow(2,sin(y))*pow(2,sin(x))/12)
plot(sin(x*y/10)/10)
plot(sin(r)/r)
plot(tanh(x)+tanh(y))/3
plot(1/sqrt(2*pi))*e^(-(r^2)/2)
clear
atanh(x) atanh returns the inverse hyperbolic tangent of x.
cbrt(x) Cbrt returns the cube root of x.
expm1(x) Expm1 returns e**x - 1, the base-e exponential of x minus 1.
It is more accurate than Exp(x) - 1 when x is near zero.
inf(x) Inf returns positive infinity if sign >= 0, negative infinity if sign < 0.
sqrt(x) Sqrt returns the square root of x.
tan(x) Tan returns the tangent of the radian argument x.
asinh(x) asinh returns the inverse hyperbolic sine of x.
gamma(x) Gamma returns the Gamma function of x.
J0(x) J0 returns the order-zero Bessel function of the first kind.
mod(x, y) Mod returns the floating-point remainder of x/y.  The magnitude of the
result is less than y and its sign agrees with that of x.
round(x) Round returns the nearest integer, rounding half away from zero.
abs(x) Abs returns the absolute value of x.
copysign(x, y) Copysign returns a value with the magnitude of x and the sign of y.
Jn(x, y) Jn returns the order-n Bessel function of the first kind.
pow10(x) Pow10 returns 10**n, the base-10 exponential of n.
remainder(x, y) Remainder returns the IEEE 754 floating-point remainder of x/y.
Y1(x) Y1 returns the order-one Bessel function of the second kind.
asin(x) asin returns the arcsine, in radians, of x.
atan(x) atan returns the arctangent, in radians, of x.
exp(x) Exp returns e**x, the base-e exponential of x.
FMA(x, y, z) FMA returns x * y + z, computed with only one rounding.
(That is, FMA returns the fused multiply-add of x, y, and z.)
min(x, y) Min returns the smaller of x or y.
tanh(x) Tanh returns the hyperbolic tangent of x.
acos(x) acos returns the arccosine, in radians, of x.
J1(x) J1 returns the order-one Bessel function of the first kind.i
log1p(x) Log1p returns the natural logarithm of 1 plus its argument x.
It is more accurate than Log(1 + x) when x is near zero.
logb(x) Logb returns the binary exponent of x.
sin(x) Sin returns the sine of the radian argument x.
hypot(x) Hypot returns Sqrt(p*p + q*q), taking care to avoid
unnecessary overflow and underflow.
log(x) Log returns the natural logarithm of x.
nextafter(x, y) Nextafter returns the next representable float64 value after x towards y.
trunc(x) Trunc returns the integer value of x.
sinh(x) Sinh returns the hyperbolic sine of x.
Y0(x) Y0 returns the order-zero Bessel function of the second kind.
acosh(x) acosh returns the inverse hyperbolic cosine of x.
atan2(x, y) atan2 returns the arc tangent of y/x, using the signs of the two to
determine the quadrant of the return value.
exp2(x) Exp2 returns 2**x, the base-2 exponential of x.
floor(x) Floor returns the greatest integer value less than or equal to x.
roundtoeven(x) RoundToEven returns the nearest integer, rounding ties to even.
log2(x) Log2 returns the binary logarithm of x.
The special cases are the same as for Log.
max(x, y) Max returns the larger of x or y.
pow(x, y) Pow returns x**y, the base-x exponential of y.
cos(x) cos returns the cosin of the radian argument x.
ceil(x) Ceil returns the least integer value greater than or equal to x.
dim(x, y) Dim returns the maximum of x-y or 0.
ldexp(x, y) Ldexp is the inverse of Frexp. It returns frac × 2**exp.
log10(x) Log10 returns the decimal logarithm of x.
The special cases are the same as for Log.
Yn(x, y) Yn returns the order-n Bessel function of the second kind.

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