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.

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SHA3-256: 7ff8345e112c11b1f857d303c20ba8343a6980254c9f0d8fd1b1ff00a45365ca
User & Date: js on 2011-09-09 23:22:12
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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
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Modified configure.ac from [235ed393ab] to [899596c0f4].

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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;
], [
], [
	AS_IF([$EGREP BEndian conftest.$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], [
			fp_endianess="little endian"
		])
	])
])
AC_MSG_RESULT($fp_endianess)
AS_IF([test x"$fp_endianess" = x"unknown"], [
	AC_MSG_ERROR(








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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 = 2.993700760838795055656993580068609688772747263874402942272934826871811872228512759832626847251963763755836687759498519784550143745834860002945223766052808125982053455555265216112722718870586961456110693379343178124592311441022662940307099598578775368547768968914916965731708568179631324904813506101190853720749196062963892799499230635163056742330563321122389331703618066046034494287335316842529021563862331183541255013987734473643350285400060357711238514186776429325214739886098119655678483017894951556639821088508565036657794343031121375178126860889964700274558728491825977274341798997758923017217660272136611938897932105874133412726223468780517578125e-259;
], [
], [
	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([$EGREP dnEgiB conftest.$ac_objext >/dev/null], [
			fp_endianess="little endian"
		])
	])
])
AC_MSG_RESULT($fp_endianess)
AS_IF([test x"$fp_endianess" = x"unknown"], [
	AC_MSG_ERROR(
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