diff options
| author | Thomas E. Dickey <dickey@invisible-island.net> | 2001-02-13 01:44:28 -0500 |
|---|---|---|
| committer | Thomas E. Dickey <dickey@invisible-island.net> | 2001-02-13 01:44:28 -0500 |
| commit | affaa4f761ddf2c0edce3e00f3a989a0ef8a44d8 (patch) | |
| tree | 3da4fcaa7cba63a893e69b0e6737b6eb4cea4079 /aclocal.m4 | |
| parent | 2a786b2632ff4fe945cb5826f7a378778caf72eb (diff) | |
| download | lynx-snapshots-affaa4f761ddf2c0edce3e00f3a989a0ef8a44d8.tar.gz | |
snapshot of project "lynx", label v2-8-4dev_18
Diffstat (limited to 'aclocal.m4')
| -rw-r--r-- | aclocal.m4 | 38 |
1 files changed, 32 insertions, 6 deletions
diff --git a/aclocal.m4 b/aclocal.m4 index b2fede78..b7b32f39 100644 --- a/aclocal.m4 +++ b/aclocal.m4 @@ -2567,9 +2567,9 @@ AC_MSG_RESULT($cf_use_socks5p_h) test "$cf_use_socks5p_h" = yes && AC_DEFINE(INCLUDE_PROTOTYPES) ])dnl dnl --------------------------------------------------------------------------- -dnl srand() and rand() are more standard, but we'll accept other variations -dnl if they are available. All return an integer between 0 and RAND_MAX, -dnl which must be defined for use in scaling. +dnl Check for functions similar to srand() and rand(). lrand48() and random() +dnl return a 31-bit value, while rand() returns a value less than RAND_MAX +dnl which usually is only 16-bits. AC_DEFUN([CF_SRAND],[ AC_CACHE_CHECK(for random-integer functions, cf_cv_srand_func,[ cf_cv_srand_func=unknown @@ -2581,16 +2581,42 @@ AC_TRY_LINK([ #ifdef HAVE_STDLIB_H #include <stdlib.h> #endif +#ifdef HAVE_LIMITS_H +#include <limits.h> +#endif ],[long seed = 1; $cf_srand_func(seed); seed = $cf_rand_func()], [cf_cv_srand_func=$cf_func break]) done ]) if test "$cf_cv_srand_func" != unknown ; then + AC_CACHE_CHECK(for range of random-integers, cf_cv_rand_max,[ + case $cf_cv_srand_func in + srand/rand) + cf_cv_rand_max=RAND_MAX + cf_rand_max=16 + ;; + *) + cf_cv_rand_max=INT_MAX + cf_rand_max=31 + ;; + esac + AC_TRY_COMPILE([ +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#ifdef HAVE_LIMITS_H +#include <limits.h> +#endif + ],[long x = $cf_cv_rand_max],, + [cf_cv_rand_max="(1L<<$cf_rand_max)-1"]) + ]) cf_srand_func=`echo $cf_func | sed -e 's@/.*@@'` - cf_rand_func=`echo $cf_func | sed -e 's@.*/@@'` - AC_DEFINE_UNQUOTED(my_srand,$cf_srand_func) - AC_DEFINE_UNQUOTED(my_rand, $cf_rand_func) + cf_rand_func=`echo $cf_func | sed -e 's@.*/@@'` + CF_UPPER(cf_rand_max,ifelse($1,,my_,$1)rand_max) + AC_DEFINE_UNQUOTED(ifelse($1,,my_,$1)srand,$cf_srand_func) + AC_DEFINE_UNQUOTED(ifelse($1,,my_,$1)rand, $cf_rand_func) + AC_DEFINE_UNQUOTED([$]cf_rand_max, $cf_cv_rand_max) fi ])dnl dnl --------------------------------------------------------------------------- |