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#!/usr/bin/env julia
#
# @license Apache-2.0
#
# Copyright (c) 2018 The Stdlib Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import JSON
"""
gen( x, name )
Generate fixture data and write to file.
# Arguments
* `x`: domain
* `name::AbstractString`: output filename
# Examples
``` julia
julia> x = range( 1e-200, stop = 1e-308, length = 1007 );
julia> gen( x, \"data.json\" );
```
"""
function gen( x, name )
len = length( x );
frac = Array{Float64}( undef, len );
exp = Array{Float64}( undef, len );
v = Array{Float64}( undef, len );
for i in eachindex(x)
out = frexp( x[i] );
frac[ i ] = out[ 1 ];
exp[ i ] = out[ 2 ];
v[ i ] = ldexp( out[1], out[2] );
end
# Store data to be written to file as a collection:
data = Dict([
("frac", frac),
("exp", exp),
("expected", v)
]);
# Based on the script directory, create an output filepath:
filepath = joinpath( dir, name );
# Write the data to the output filepath as JSON:
outfile = open( filepath, "w" );
write( outfile, JSON.json(data) );
close( outfile );
end
# Get the filename:
file = @__FILE__;
# Extract the directory in which this file resides:
dir = dirname( file );
# Small values:
x = range( 1e-200, stop = 1e-308, length = 1007 );
name = "small.json";
gen( x, name );
# Medium values:
x = range( -1e3, stop = 1e3, length = 1007 );
name = "medium.json";
gen( x, name );
# Large values:
x = range( 1e200, stop = 1e308, length = 1007 );
name = "large.json";
gen( x, name );
# Subnormal values:
x = range( 1e-310, stop = 5e-324, length = 1007 );
name = "subnormal.json";
gen( x, name );
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