MaplePrimes - Questions and Posts tagged with evalhf

how do I get sums produced by "add" to immediately evaluate?

webreg2003 — Thu, 07 Mar 2013 20:16:26 Z

In Maple 15.01, the commands

   f := x -> sin(2 x)
   h := n -> (1/Pi) int(f(x) sin(n x), x = -Pi .. Pi)
   g := x -> add(h(n) sin(n x), n = 1 .. 4)
   g(x)

result in

   sin(2 x)

which is what I expect. However, the command

   evalhf(g(2))

results in the error message
   "Error, unable to evaluate function `int` in evalhf"
so evalhf is not being passed sin(4) as I want....

Problem with minimal time computation !

GPekov — Mon, 13 Aug 2012 20:52:33 Z

I provide a code that I tried to optimize (minimize the calculation time) several times, finally I succeeded to:

###### Define global variables
DGV:=proc()
global CI0P,CI1P,CK0P,CK1P,CK0G,CK1G;

CI0P:=Array([1,6.25,9.765625,6.781684,2.6490953,0.66227383,0.1149781,0.014665573,0.0014321849,0.11050809e-3,0.69067559e-5,0.35675392e-6,0.

One more argument for long double

icegood — Wed, 01 Feb 2012 15:47:37 Z

If there are still doubts to support "long double" in evalhf then there is one more argument to implement them in at least those machines that support it:
CalcInEvalhfFast.mw

P.S. In that well-known holy war about long double supporting in compilers i'm rather on side of "to support them" than on side of (stupid) microsoft visual c++ compiler.

evalhf: more than 500 locals

icegood — Sun, 22 Jan 2012 00:12:01 Z

evalhf: more than 500 locals

From where that restriction is? Is it workaroundable?

underwater stones with assignment to locals.

icegood — Wed, 23 Nov 2011 14:39:37 Z

In next code g is evalhfable while MainF is not. Is it possible to create appropriate local in IntermediateCalc cover (via appropriate assignments) for fres2 to get MainF evalhfable too? ex.mw

round(evalhf(Digits))

amrramadaneg — Wed, 24 Nov 2010 07:49:18 Z

Hi everybody, could any one tell me " What is the job of order round(evalhf(Digits)) ?

Amr