Mercurial > pub > dyncall > bindings
comparison ruby/rbdc/examples/unix_math.rb @ 0:0cfcc391201f
initial from svn dyncall-1745
| author | Daniel Adler |
|---|---|
| date | Thu, 19 Mar 2015 22:26:28 +0100 |
| parents | |
| children | 5e159be89d73 |
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| -1:000000000000 | 0:0cfcc391201f |
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| 1 #////////////////////////////////////////////////////////////////////// | |
| 2 # | |
| 3 # unix_math.rb | |
| 4 # Copyright 2014 Tassilo Philipp | |
| 5 # | |
| 6 # Dyncall sample loading libm and calling functions | |
| 7 # | |
| 8 #/////////////////////////////////////////////////////////////////////// | |
| 9 | |
| 10 require 'rbdc' | |
| 11 | |
| 12 l = Dyncall::ExtLib.new | |
| 13 if l.load('/usr/lib/libm.so') != nil and l.syms_init('/usr/lib/libm.so') != nil | |
| 14 puts 'Symbols in libm: '+l.syms_count.to_s | |
| 15 puts 'All symbol names in libm:' | |
| 16 l.syms_each { |s| puts s } | |
| 17 | |
| 18 puts 'libm has sqrtf()? ' + l.exists?(:sqrtf) .to_s | |
| 19 puts 'libm has pow()? ' + l.exists?(:pow) .to_s | |
| 20 puts 'libm has not_in_libm()? ' + l.exists?(:not_in_libm).to_s | |
| 21 | |
| 22 puts 'sqrtf(36.f) = ' + l.call(:sqrtf, 'f)f', 36.0) .to_s | |
| 23 puts 'pow(2.0, 10.0) = ' + l.call(:pow, 'dd)d', 2.0, 10.0).to_s | |
| 24 end | |
| 25 |