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if not modules then modules = { } end modules ['cldf-pos'] = {
version = 1.001,
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- https://cse512-19s.github.io/FP-Well-Rounded/
local tostring, load, type, tonumber = tostring, load, type, tonumber
local lpegmatch = lpeg.match
local context = context
local setmetatableindex = table.setmetatableindex
local implement = interfaces.implement
local fromposit = posit.fromposit
local toposit = posit.toposit
local posittonumber = posit.tonumber
local values = tokens.values
local boolean_code = values.boolean
local float_code = values.float
local scanners = tokens.scanners
local scanposit = scanners.posit
local scanfloat = scanners.float
local scaninteger = scanners.integer
local scancsname = scanners.csname
do -- these are only for testing and might go to a module eventually
local codes = tex.codes
local global_code = tex.flagcodes.global
local savelua = token.savelua
----- isdefined = token.isdefined
local newsparse = sparse.new
local setsparse = sparse.set
----- wipesparse = sparse.wipe
local restoresparse = sparse.restore
local registerfunction = context.functions.register
implement {
name = "positunumdef",
public = true,
untraced = true,
protected = true,
actions = function(what)
local name = scancsname(true)
local code = newsparse()
local restore = registerfunction(function() restoresparse(code) end)
implement {
name = name,
public = true,
protected = true,
usage = "value",
actions = function(what)
local n = scaninteger()
if what == "value" then
local v = fromposit(code[n])
-- return float_code, v
context("%.99g",v)
else
local v = toposit(scanfloat())
if what and (tonumber(what) & global_code) then
setsparse(code,"global",n,v)
else
savelua(restore,true) -- only once
setsparse(code,n,v)
end
end
end,
}
codes[name] = code
end,
}
do
local p_number = lpeg.patterns.number
local p = lpeg.Cs(
lpeg.Cc("local new = new ; return ")
* (
lpeg.C(p_number) / function(s)
return "new(" .. s .. ")"
end
+ lpeg.P(1)
)^0
)
local t = setmetatableindex({ new = posit.new }, posit)
local function calculate(s)
local new = lpegmatch(p,s)
new = load(new,nil,nil,t)
if new then
new = new()
if new then
return new
end
end
return old
end
implement {
name = "positunum",
public = true,
arguments = "string",
actions = function(s)
local r = calculate(s)
local t = type(r)
if t == "boolean" then
context(tostring(r))
elseif t == "string" then
context(r)
else
context("%N",posittonumber(r))
end
end
}
implement {
name = "ifpositunum",
public = true,
usage = "condition",
arguments = "string",
actions = function(s)
return boolean_code, calculate(s) and true or false
end,
}
end
end
do
local xsin = xmath.sin local xasin = xmath.asin local xsinh = xmath.sinh local xasinh = xmath.asinh
local xcos = xmath.cos local xacos = xmath.acos local xcosh = xmath.cosh local xacosh = xmath.acosh
local xtan = xmath.tan local xatan = xmath.atan local xtanh = xmath.tanh local xatanh = xmath.atanh
local xsqrt = xmath.sqrt
local xlog = xmath.log
local xexp = xmath.exp
local xpow = xmath.pow
local xceil = xmath.ceil
local xfloor = xmath.floor
local xround = xmath.round
local xabs = xmath.fabs
local xmod = xmath.fmod
local xrem = xmath.remainder
local xrad = xmath.rad
local xdeg = xmath.deg
local xatan2 = xmath.atan2
implement { name = "pfsin", public = true, usage = "value", actions = function() return float_code, xsin (scanposit(true)) end }
implement { name = "pfcos", public = true, usage = "value", actions = function() return float_code, xcos (scanposit(true)) end }
implement { name = "pftan", public = true, usage = "value", actions = function() return float_code, xtan (scanposit(true)) end }
implement { name = "pfasin", public = true, usage = "value", actions = function() return float_code, xasin (scanposit(true)) end }
implement { name = "pfacos", public = true, usage = "value", actions = function() return float_code, xacos (scanposit(true)) end }
implement { name = "pfatan", public = true, usage = "value", actions = function() return float_code, xatan (scanposit(true)) end }
implement { name = "pfsinh", public = true, usage = "value", actions = function() return float_code, xsinh (scanposit(true)) end }
implement { name = "pfcosh", public = true, usage = "value", actions = function() return float_code, xcosh (scanposit(true)) end }
implement { name = "pftanh", public = true, usage = "value", actions = function() return float_code, xtanh (scanposit(true)) end }
implement { name = "pfasinh", public = true, usage = "value", actions = function() return float_code, xasinh(scanposit(true)) end }
implement { name = "pfacosh", public = true, usage = "value", actions = function() return float_code, xacosh(scanposit(true)) end }
implement { name = "pfatanh", public = true, usage = "value", actions = function() return float_code, xatanh(scanposit(true)) end }
implement { name = "pfsqrt", public = true, usage = "value", actions = function() return float_code, xsqrt (scanposit(true)) end }
implement { name = "pflog", public = true, usage = "value", actions = function() return float_code, xlog (scanposit(true)) end }
implement { name = "pfexp", public = true, usage = "value", actions = function() return float_code, xexp (scanposit(true)) end }
implement { name = "pfceil", public = true, usage = "value", actions = function() return float_code, xceil (scanposit(true)) end }
implement { name = "pffloor", public = true, usage = "value", actions = function() return float_code, xfloor(scanposit(true)) end }
implement { name = "pfround", public = true, usage = "value", actions = function() return float_code, xround(scanposit(true)) end }
implement { name = "pfabs", public = true, usage = "value", actions = function() return float_code, xabs (scanposit(true)) end }
implement { name = "pfrad", public = true, usage = "value", actions = function() return float_code, xrad (scanposit(true)) end }
implement { name = "pfdeg", public = true, usage = "value", actions = function() return float_code, xdeg (scanposit(true)) end }
implement { name = "pfatantwo", public = true, usage = "value", actions = function() return float_code, xatan2(scanposit(true),scanposit(true)) end }
implement { name = "pfpow", public = true, usage = "value", actions = function() return float_code, xpow (scanposit(true),scanposit(true)) end }
implement { name = "pfmod", public = true, usage = "value", actions = function() return float_code, xmod (scanposit(true),scanposit(true)) end }
implement { name = "pfrem", public = true, usage = "value", actions = function() return float_code, xrem (scanposit(true),scanposit(true)) end }
end
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