(define-library (scheme r5rs)
  (import (scheme base)
          (scheme inexact)
          (scheme write)
          (scheme read)
          (scheme file)
          (scheme cxr)
          (scheme lazy)
          (scheme eval)
          (scheme load))

  (define (null-environment n)
    (if (not (= n 5))
        (error "unsupported environment version" n)
        '(scheme null)))

  (define (scheme-report-environment n)
    (if (not (= n 5))
        (error "unsupported environment version" n)
        '(scheme r5rs)))

  (export * + - / < <= = > >=
          abs acos and
          ;; angle
          append apply asin assoc assq assv atan
          begin boolean?
          caaaar caaadr caaar caadar caaddr caadr caar cadaar cadadr cadar caddar cadddr caddr cadr
          call-with-current-continuation
          call-with-input-file
          call-with-output-file
          call-with-values
          car case cdaaar cdaadr cdaar cdadar cdaddr cdadr cdar cddaar cddadr cddar cdddar cddddr cdddr cddr cdr
          ceiling
          ;; char->integer char-alphabetic? char-ci<=? char-ci<? char-ci=? char-ci>=? char-ci>? char-downcase char-lower-case? char-numeric? char-ready? char-upcase char-upper-case? char-whitespace? char<=? char<? char=? char>=? char>? char?
          close-input-port close-output-port complex? cond cons cos current-input-port current-output-port
          define define-syntax delay
          ;; denominator
          display do dynamic-wind
          eof-object? eq? equal? eqv? eval even?
          (rename inexact exact->inexact)
          exact? exp expt
          floor for-each force
          gcd
          if
          ;; imag-part
          (rename exact inexact->exact)
          inexact? input-port? integer->char integer?
          ;; interaction-environment
          lambda lcm length let
          peek-char procedure?
          quote
          rational? read
          ;; real-part
          remainder round
          scheme-report-environment
          set! set-cdr! sqrt string->list string->symbol
          ;; string-ci<=? string-ci=? string-ci>?
          string-fill! string-ref string<=? string=? string>? substring symbol?
          truncate
          vector vector-fill! vector-ref vector? with-output-to-file write-char
          output-port?
          let-syntax
          letrec-syntax
          list->string
          list-ref
          list?
          log
          ;; make-polar
          make-string
          map
          member
          memv
          modulo
          newline
          null-environment
          number->string
          ;; numerator
          open-input-file
          or
          pair?
          positive?
          quasiquote
          quotient
          ;; rationalize
          read-char
          real?
          reverse
          let*
          letrec
          list
          list->vector
          list-tail
          load
          ;; magnitude
          ;; make-rectangular
          make-vector
          max
          memq
          min
          negative?
          not
          null?
          number?
          odd?
          open-output-file
          set-car!
          sin
          string
          string->number
          string-append
          ;; string-ci<?
          ;; string-ci>=?
          string-copy
          string-length
          string-set!
          string<?
          string>=?
          string?
          symbol->string
          tan
          values
          vector->list
          vector-length
          vector-set!
          with-input-from-file
          write
          zero?
          ))