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(guile-tut.info)Compiling and running learn1

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Enter node , (file) or (file)node

Compiling and running learn1
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     gcc -g -c learn1.c -o learn1.o
     gcc -g -c c_builtins.c -o c_builtins.o
     gcc -o learn1 learn1.o c_builtins.o -lguile -lm

  If you run `learn1', it will prompt you for a one-line Scheme
expression, just as `learn0' did.  The difference is that you can use
the new C builtin procedures (`c-factorial', `c-sin', `v-t').

     <shell-prompt> ./learn1
     welcome to Guile
     hello Guile
     learn1> (display (c-factorial 6))
     720
     learn1> (display (c-factorial 20))
     2192834560
     learn1> (display (c-factorial 100))
     0
     learn1> (display (c-sin 1.5))
     0.997494986604054
     learn1> (display (v-t 10))
     requested length for vector: 10
     #(0.0 0.0 1.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0)
     learn1> (display (v-t 15))
     requested length for vector: 15
     #(0.0 0.0 1.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0)
     learn1> (quit)
     <shell-prompt>

  As you see, taking `(c-factorial 100)' does not use bignumbers and
returns a bogus answer.