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* module/Makefile.am: Add r7rs-libraries.scm as dependency for boot-9.go. (SOURCES): Add $(R7RS_SOURCES). (R7RS_SOURCES): New variable. (NOCOMP_SOURCES): Add ice-9/r7rs-libraries.scm. * module/ice-9/boot-9.scm: Include r7rs-libraries.scm. (%cond-expand-features): Add r7rs, exact-closed, ieee-float, full-unicode, and ratios. Add TODO comments. (%cond-expand): New procedure, derived from code in 'cond-expand'. (cond-expand): Reimplement in terms of '%cond-expand'. * module/ice-9/r7rs-libraries.scm: module/scheme/base.scm: module/scheme/case-lambda.scm: module/scheme/char.scm: module/scheme/complex.scm: module/scheme/cxr.scm: module/scheme/eval.scm: module/scheme/file.scm: module/scheme/inexact.scm: module/scheme/lazy.scm: module/scheme/load.scm: module/scheme/process-context.scm: module/scheme/r5rs.scm: module/scheme/read.scm: module/scheme/repl.scm: module/scheme/time.scm: module/scheme/write.scm: New files.
34 lines
1.4 KiB
Scheme
34 lines
1.4 KiB
Scheme
;;; time.scm --- The R7RS time library
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;; Copyright (C) 2013, 2014 Free Software Foundation, Inc.
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;;
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;; This library is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU Lesser General Public
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;; License as published by the Free Software Foundation; either
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;; version 3 of the License, or (at your option) any later version.
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;;
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;; This library is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; Lesser General Public License for more details.
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;;
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;; You should have received a copy of the GNU Lesser General Public
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;; License along with this library; if not, write to the Free Software
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;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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(define-library (scheme time)
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(export current-second current-jiffy jiffies-per-second)
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(import (scheme base)
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(srfi srfi-19)
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(rename (only (guile)
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internal-time-units-per-second
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get-internal-real-time)
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(get-internal-real-time current-jiffy)))
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(begin
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(define (current-second)
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(let ((time (current-time time-tai)))
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(+ (time-second time)
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(* 1e-9 (time-nanosecond time)))))
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(define (jiffies-per-second)
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internal-time-units-per-second)))
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