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(scm_num2uint32): New function.

Browse source 
(scm_htonl, scm_ntohl): Use it to enforce 32-bit range check on
systems with 64-bit long.
This commit is contained in:
Kevin Ryde 2006-07-23 22:25:11 +00:00
parent 80f1ae3310
commit 0e558e5693
1 changed files with 13 additions and 2 deletions
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15
libguile/socket.c
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@ -134,6 +134,17 @@ SCM_DEFINE (scm_ntohs, "ntohs", 1, 0, 0,
}
#undef FUNC_NAME
static uint32_t
scm_num2uint32 (SCM num, unsigned long int pos, const char *func)
{
unsigned long uu = scm_num2ulong (num, pos, func);
#if SIZEOF_LONG > 4
if (uu > 0xFFFFFFFFL)
scm_out_of_range (s_caller, num);
#endif
return (uint32_t) uu;
}
SCM_DEFINE (scm_htonl, "htonl", 1, 0, 0,
(SCM value),
"Convert a 32 bit quantity from host to network byte ordering.\n"
@ -141,7 +152,7 @@ SCM_DEFINE (scm_htonl, "htonl", 1, 0, 0,
"and returned as a new integer.")
#define FUNC_NAME s_scm_htonl
{
uint32_t c_in = SCM_NUM2ULONG (1, value);
uint32_t c_in = scm_num2uint32 (value, SCM_ARG1, FUNC_NAME);
return scm_ulong2num (htonl (c_in));
}
@ -154,7 +165,7 @@ SCM_DEFINE (scm_ntohl, "ntohl", 1, 0, 0,
"and returned as a new integer.")
#define FUNC_NAME s_scm_ntohl
{
uint32_t c_in = SCM_NUM2ULONG (1, value);
uint32_t c_in = scm_num2uint32 (value, SCM_ARG1, FUNC_NAME);
return scm_ulong2num (ntohl (c_in));
}