ObjFW  Check-in [7ff8345e11]

Overview
Comment:More robust floating point endianess check.

It has a \n before and after the magic now.
Some grep versions (like that on QNX) need that.

Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: 7ff8345e112c11b1f857d303c20ba8343a6980254c9f0d8fd1b1ff00a45365ca
User & Date: js on 2011-09-09 23:22:12
Other Links: manifest | tags
Context
2011-09-10
16:07
Fix a forgotten comment. check-in: 8c8e90bd66 user: js tags: trunk
2011-09-09
23:22
More robust floating point endianess check. check-in: 7ff8345e11 user: js tags: trunk
19:15
Fix a type mistmach (interface vs. implementation). check-in: e493aac469 user: js tags: trunk
Changes
Hide Diffs Side-by-Side Diffs Ignore Whitespace Patch

Modified configure.ac from [235ed393ab] to [899596c0f4].

︙
282
283
284
285
286
287
288
289

290
291
292

293
294
295
296
297

298
299
300
301
302
303
304

282
283
284
285
286
287
288

289
290
291

292
293
294
295
296

297
298
299
300
301
302
303
304








-
+


-
+




-
+








AS_IF([test x"$ac_cv_sizeof_float" != x"4" -o x"$ac_cv_sizeof_double" != x"8"],
	[AC_MSG_ERROR(
		[Floating point implementation does not conform to IEEE 754!])])

AC_MSG_CHECKING(for floating point endianess)
fp_endianess="unknown"
AC_TRY_COMPILE([
	double endianess = 184092775106.859375;
	double endianess = 2.993700760838795055656993580068609688772747263874402942272934826871811872228512759832626847251963763755836687759498519784550143745834860002945223766052808125982053455555265216112722718870586961456110693379343178124592311441022662940307099598578775368547768968914916965731708568179631324904813506101190853720749196062963892799499230635163056742330563321122389331703618066046034494287335316842529021563862331183541255013987734473643350285400060357711238514186776429325214739886098119655678483017894951556639821088508565036657794343031121375178126860889964700274558728491825977274341798997758923017217660272136611938897932105874133412726223468780517578125e-259;
], [
], [
	AS_IF([$EGREP BEndian conftest.$ac_objext >/dev/null], [
	AS_IF([$EGREP BigEnd conftest.$ac_objext >/dev/null], [
		AC_DEFINE(OF_FLOAT_BIG_ENDIAN, 1,
			[Whether floats are big endian])
		fp_endianess="big endian"
	], [
		AS_IF([$EGREP naidnEB conftest.$ac_objext >/dev/null], [
		AS_IF([$EGREP dnEgiB conftest.$ac_objext >/dev/null], [
			fp_endianess="little endian"
		])
	])
])
AC_MSG_RESULT($fp_endianess)
AS_IF([test x"$fp_endianess" = x"unknown"], [
	AC_MSG_ERROR(
︙

Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
This page was generated in about 0.017s