User:Ujjavalverma10

Bug Fixes and Reports

Bug Fix for issue 505

I have submitted a patch that adds support for the following 12 functions :
Cosec, Sec, Cot
Cosech, Sech, Coth
ArcCosec, ArcSec, ArcCot
ArcCosech, ArcSech, ArcCoth

The patch can be found at the following link : Issue 505 In addition to this, I have also reported and resolved Issue 509 and Issue 508

Bug Fix for issue 460

Issue 460 reports that the 'Time to build system' value is sometimes inconsistent. I have verified the reproducibility of this bug and also identified its cause. It is due to incorrect printing format.

Replacing Line 91 in /ascend/system/system.c file by the following line of code solves the problem.

FPRINTF(stderr,"Time to build system = %.4lf s (outputs zero for very small build time)\n", ((tm_cpu_time() - comptime)>=0.00001)?(tm_cpu_time()-comptime):0);

A Proposed solution for issue 459

Issue 459 demands a way to assign values to a range of array elements. Python invokes __setslice__ method when something like " a[1:4] = .. " is used. Thus this task can be accomplished by overriding the __setslice__ method of a list object as follows :

Invalid language.

You need to specify a language like this: <source lang="html">...</source>

Supported languages for syntax highlighting:

a4c, abap, abc, abnf, actionscript, ada, agda, alan, algol, ampl, amtrix, applescript, arc, arm, as400cl, ascend, asciidoc, asp, aspect, assembler, ats, autohotkey, autoit, avenue, awk, ballerina, bat, bbcode, bcpl, bibtex, biferno, bison, blitzbasic, bms, bnf, boo, c, carbon, ceylon, charmm, chill, chpl, clean, clearbasic, clipper, clojure, clp, cmake, cobol, coffeescript, coldfusion, conf, cpp2, critic, crk, crystal, cs_block_regex, csharp, css, d, dart, delphi, diff, dockerfile, dts, dylan, ebnf, ebnf2, eiffel, elixir, elm, email, erb, erlang, euphoria, exapunks, excel, express, factor, fame, fasm, felix, fish, fortran77, fortran90, frink, fsharp, fstab, fx, gambas, gdb, gdscript, go, graphviz, haml, hare, haskell, haxe, hcl, html, httpd, hugo, icon, idl, idlang, inc_luatex, informix, ini, innosetup, interlis, io, jam, jasmin, java, javascript, js_regex, json, jsp, jsx, julia, kotlin, ldif, less, lhs, lilypond, limbo, lindenscript, lisp, logtalk, lotos, lotus, lua, luban, makefile, maple, markdown, matlab, maya, mercury, meson, miranda, mod2, mod3, modelica, moon, ms, msl, mssql, mxml, n3, nasal, nbc, nemerle, netrexx, nginx, nice, nim, nix, nsis, nxc, oberon, objc, ocaml, octave, oorexx, org, os, oz, paradox, pas, pdf, perl, php, pike, pl1, plperl, plpython, pltcl, po, polygen, pony, pov, powershell, pro, progress, ps, psl, pure, purebasic, purescript, pyrex, python, q, qmake, qml, qu, r, rebol, rego, rexx, rnc, rpg, rpl, rst, ruby, rust, s, sam, sas, scad, scala, scilab, scss, shellscript, slim, small, smalltalk, sml, snmp, snobol, solidity, spec, spn, sql, squirrel, styl, svg, swift, sybase, tcl, tcsh, terraform, tex, toml, tsql, tsx, ttcn3, txt, typescript, upc, vala, vb, verilog, vhd, vimscript, vue, wat, whiley, wren, xml, xpp, yaiff, yaml, yaml_ansible, yang, zig, znn

The use of this class is demonstrated as follows :

Invalid language.

You need to specify a language like this: <source lang="html">...</source>

Supported languages for syntax highlighting:

a4c, abap, abc, abnf, actionscript, ada, agda, alan, algol, ampl, amtrix, applescript, arc, arm, as400cl, ascend, asciidoc, asp, aspect, assembler, ats, autohotkey, autoit, avenue, awk, ballerina, bat, bbcode, bcpl, bibtex, biferno, bison, blitzbasic, bms, bnf, boo, c, carbon, ceylon, charmm, chill, chpl, clean, clearbasic, clipper, clojure, clp, cmake, cobol, coffeescript, coldfusion, conf, cpp2, critic, crk, crystal, cs_block_regex, csharp, css, d, dart, delphi, diff, dockerfile, dts, dylan, ebnf, ebnf2, eiffel, elixir, elm, email, erb, erlang, euphoria, exapunks, excel, express, factor, fame, fasm, felix, fish, fortran77, fortran90, frink, fsharp, fstab, fx, gambas, gdb, gdscript, go, graphviz, haml, hare, haskell, haxe, hcl, html, httpd, hugo, icon, idl, idlang, inc_luatex, informix, ini, innosetup, interlis, io, jam, jasmin, java, javascript, js_regex, json, jsp, jsx, julia, kotlin, ldif, less, lhs, lilypond, limbo, lindenscript, lisp, logtalk, lotos, lotus, lua, luban, makefile, maple, markdown, matlab, maya, mercury, meson, miranda, mod2, mod3, modelica, moon, ms, msl, mssql, mxml, n3, nasal, nbc, nemerle, netrexx, nginx, nice, nim, nix, nsis, nxc, oberon, objc, ocaml, octave, oorexx, org, os, oz, paradox, pas, pdf, perl, php, pike, pl1, plperl, plpython, pltcl, po, polygen, pony, pov, powershell, pro, progress, ps, psl, pure, purebasic, purescript, pyrex, python, q, qmake, qml, qu, r, rebol, rego, rexx, rnc, rpg, rpl, rst, ruby, rust, s, sam, sas, scad, scala, scilab, scss, shellscript, slim, small, smalltalk, sml, snmp, snobol, solidity, spec, spn, sql, squirrel, styl, svg, swift, sybase, tcl, tcsh, terraform, tex, toml, tsql, tsx, ttcn3, txt, typescript, upc, vala, vb, verilog, vhd, vimscript, vue, wat, whiley, wren, xml, xpp, yaiff, yaml, yaml_ansible, yang, zig, znn

output :
['1', '2', '3', '4', '5', '6', '7', '8', '9']
['1', 5, 5, 5, '5', '6', '7', '8', '9']

New Models

A simple model for FRUSTUM OF A CONE

I am new to the ASCEND language and intend to contribute something to the community through GSOC2011. I have prior experience with GUI development and would be applying for projects involving GUI development. I wrote a sample model for Frustum Of A Cone

REQUIRE "system.a4l";
MODEL frustrum_of_cone;

    (* variables *)
    R,
    h,
    r,
    l,
    metal_density,
    curved_area,
    total_area,
    vol,
    metal_mass      IS_A solver_var;
    (* specifications *)
    R              = 30.0;
    r		   = 10.0;
    h              = 50.0;
    metal_density  = 9.60;
    
    (* equations *)
    l = sqrt(h^2 + (R-r)^2);
    vol = 3.1416*h*(R^2 + r^2 + r*R)/3;
    curved_area = 3.1416*l*(R+r);
    total_area = 3.1416*(R^2 + r^2) + curved_area;
    metal_mass = metal_density*vol;
    
METHODS

   METHOD specify;
      FIX R;
      FIX r;
      FIX h;
      FIX metal_density;
   END specify;

   METHOD values;
      R              := 30.0 ;
      r		     := 10.0;
      h              := 50.0;
      metal_density  := 9.60 ;

   END values;

   METHOD setup;
      RUN specify;
      RUN values;
   END setup;
    
END frustrum_of_cone;

This MODEL is quite straight forward to write. ASCEND uses strong typing; it requires one to declare explicitly the type of each variable using IS_A statements.

Error creating thumbnail: File missing

Incidence Graph generated by ASCEND for the model of a frustum of cone.

Partitioned Model for FRUSTUM OF A CONE

Following is a modified version of the Frustum MODEL which breaks down a frustum into two cones : A top cone cut out from a bottom cone.

REQUIRE "atoms.a4l";
MODEL cone;
    (* variables *)
    R,	     
    h,	     	     
    l	     IS_A distance;
    curved_area	IS_A area;
    vol      IS_A volume;
   
    
    (* equations *)
    l = sqrt(h^2 + R^2);
    vol = 3.1416*h*R^2/3;
    curved_area = 3.1416*l*R;
METHODS
    METHOD specify;
        FIX R;
        FIX h;
   END specify;    
END cone;

MODEL partitioned_frustrum_of_cone;

   (* variables *)
    R,
    r,
    h		    IS_A distance;
    l		    IS_A distance;
    curved_area,
    total_area      IS_A area;

    vol             IS_A volume;
    metal_density   IS_A mass_density;
    metal_mass      IS_A mass;

    (* parts *)
    top		    IS_A cone;
    bottom          IS_A cone;
    
    (* specifications *)
    R              = 30.0 {cm};
    r		   = 10.0 {cm};
    h              = 50.0 {cm};
    metal_density  = 9.60 {g/cm^3};

    (* equations *)
    top.R = r;
    top.h = r*h/(R-r);
    bottom.R = R;
    bottom.h = h + top.h;

    l = bottom.l - top.l;
    vol = bottom.vol - top.vol;
    curved_area  = bottom.curved_area - top.curved_area;
    total_area = 3.1416*(R^2 + r^2) + curved_area;
    metal_mass = metal_density*vol;

METHODS

   METHOD specify;
      FIX R;
      FIX r;
      FIX h;
      FIX metal_density;
   END specify;

   METHOD values;
      R              := 30.0 {cm};
      r		     := 10.0 {cm};
      h              := 50.0 {cm};
      metal_density  := 9.60 {g/cm^3};

   END values;

   METHOD setup;
      RUN specify;
      RUN values;
   END setup;
   
END partitioned_frustrum_of_cone;