# HG changeset patch
# User Arne Babenhauserheide <arne.babenhauserhe...@kit.edu>
# Date 1463764424 -7200
# Fri May 20 19:13:44 2016 +0200
# Node ID 8c8510a889e2d3b9f57f5b3057f5ed0e001ab799
# Parent 0d961f25dfa2a5e421e3bd9d816740a736647cbc
initial inelegant implementation of (sleep) which takes floats
diff -r 0d961f25dfa2 -r 8c8510a889e2 libguile/scmsigs.c
--- a/libguile/scmsigs.c Wed May 18 22:18:51 2016 +0200
+++ b/libguile/scmsigs.c Fri May 20 19:13:44 2016 +0200
@@ -625,14 +625,25 @@
SCM_DEFINE (scm_sleep, "sleep", 1, 0, 0,
(SCM i),
- "Wait for the given number of seconds (an integer) or until a
signal\n"
- "arrives. The return value is zero if the time elapses or the
number\n"
- "of seconds remaining otherwise.\n"
+ "Wait for the given number of seconds (an integer or float)\n"
+ "or until a signal arrives. The return value is zero if the time\n"
+ "elapses or the number of seconds remaining otherwise.\n"
"\n"
"See also @code{usleep}.")
#define FUNC_NAME s_scm_sleep
{
- return scm_from_uint (scm_std_sleep (scm_to_uint (i)));
+ SCM one, million, i_sleep, i_usleep, res_sleep, res_usleep;
+ if (SCM_LIKELY (scm_is_integer (i)))
+ return scm_from_uint (scm_std_sleep (scm_to_uint (i)));
+ one = scm_from_int (1);
+ million = scm_from_int (1000000);
+ /* Time to wait in sleep */
+ i_sleep = scm_inexact_to_exact (scm_floor_quotient (i, one));
+ /* Time to wait in usleep */
+ i_usleep = scm_inexact_to_exact (scm_floor_quotient (scm_product (million,
scm_floor_remainder (i, one)), one));
+ res_sleep = scm_from_uint (scm_std_sleep (scm_to_uint (i_sleep)));
+ res_usleep = scm_from_ulong (scm_std_usleep (scm_to_ulong (i_usleep)));
+ return scm_sum(res_sleep, res_usleep);
}
#undef FUNC_NAME
