I think possible patch to complete resolve this problem is
--- math.h.orig 2012-12-23 11:56:01 +0400
+++ math.h 2012-12-24 13:10:52 +0400
@@ -318,8 +318,16 @@
/* Use the compiler's builtin define for FLT_EVAL_METHOD to
set float_t and double_t. */
-#if defined (__x86_64__) || defined(__FLT_EVAL_METHOD__)
-# if defined (__x86_64__) || ( __FLT_EVAL_METHOD__== 0)
+#if defined(__FLT_EVAL_METHOD__)
+# if ( __FLT_EVAL_METHOD__== -1)
+# if defined (__x86_64__)
+typedef long double float_t;
+typedef long double double_t;
+# else
+typedef float float_t;
+typedef double double_t;
+# endif
+# elif ( __FLT_EVAL_METHOD__== 0)
typedef float float_t;
typedef double double_t;
# elif (__FLT_EVAL_METHOD__ == 1)
2012/12/24 Алексей Павлов <alex...@gmail.com>
> I find that when I try to execute
> echo "#include <cmath>" | g++ -x c++ -c - -m32 -mfpmath=both -std=gnu++11
> -o /dev/null
>
> _x86_64_ not defined and __FLT_EVAL_METHOD__==-1
>
> Why gcc internal definition of __FLT_EVAL_METHOD__ not applied during
> execute code?
>
>
> 2012/12/24 Алексей Павлов <alex...@gmail.com>
>
>> Below is difference of gcc internal definitions of 64 multilib toolchain
>> with -m32 switch and without it:
>>
>> --- m32.txt 2012-12-24 09:46:13 +0400
>> +++ m64.txt 2012-12-24 09:44:19 +0400
>> @@ -7,9 +7,10 @@
>> #define __INTMAX_C(c) c ## LL
>> #define __CHAR_BIT__ 8
>> #define __UINT8_MAX__ 255
>> +#define _WIN64 1
>> #define __WINT_MAX__ 65535
>> #define __ORDER_LITTLE_ENDIAN__ 1234
>> -#define __SIZE_MAX__ 4294967295U
>> +#define __SIZE_MAX__ 18446744073709551615ULL
>> #define __WCHAR_MAX__ 65535
>> #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1
>> #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1
>> @@ -17,8 +18,9 @@
>> #define __DBL_DENORM_MIN__ ((double)4.94065645841246544177e-324L)
>> #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 1
>> #define __GCC_ATOMIC_CHAR_LOCK_FREE 2
>> -#define __FLT_EVAL_METHOD__ 2
>> +#define __FLT_EVAL_METHOD__ 0
>> #define __GCC_ATOMIC_CHAR32_T_LOCK_FREE 2
>> +#define __x86_64 1
>> #define __UINT_FAST64_MAX__ 18446744073709551615ULL
>> #define __SIG_ATOMIC_TYPE__ int
>> #define __DBL_MIN_10_EXP__ (-307)
>> @@ -44,11 +46,12 @@
>> #define __DBL_DIG__ 15
>> #define __GCC_ATOMIC_POINTER_LOCK_FREE 2
>> #define __SIZEOF_INT__ 4
>> -#define __SIZEOF_POINTER__ 4
>> -#define __USER_LABEL_PREFIX__ _
>> +#define __SIZEOF_POINTER__ 8
>> +#define __USER_LABEL_PREFIX__
>> #define __STDC_HOSTED__ 1
>> #define __WIN32 1
>> #define __LDBL_HAS_INFINITY__ 1
>> +#define __WIN64 1
>> #define __FLT_EPSILON__ 1.19209289550781250000e-7F
>> #define __LDBL_MIN__ 3.36210314311209350626e-4932L
>> #define __DEC32_MAX__ 9.999999E96DF
>> @@ -63,7 +66,7 @@
>> #define _cdecl __attribute__((__cdecl__))
>> #define __MMX__ 1
>> #define __FLT_HAS_DENORM__ 1
>> -#define __SIZEOF_LONG_DOUBLE__ 12
>> +#define __SIZEOF_LONG_DOUBLE__ 16
>> #define __BIGGEST_ALIGNMENT__ 16
>> #define __DBL_MAX__ ((double)1.79769313486231570815e+308L)
>> #define _thiscall __attribute__((__thiscall__))
>> @@ -81,10 +84,12 @@
>> #define __DEC32_MIN__ 1E-95DF
>> #define __DBL_MAX_EXP__ 1024
>> #define __DEC128_EPSILON__ 1E-33DL
>> +#define __SSE2_MATH__ 1
>> #define __WIN32__ 1
>> -#define __PTRDIFF_MAX__ 2147483647
>> +#define __PTRDIFF_MAX__ 9223372036854775807LL
>> +#define __amd64 1
>> #define __LONG_LONG_MAX__ 9223372036854775807LL
>> -#define __SIZEOF_SIZE_T__ 4
>> +#define __SIZEOF_SIZE_T__ 8
>> #define __SIZEOF_WINT_T__ 2
>> #define __GXX_ABI_VERSION 1002
>> #define __FLT_MIN_EXP__ (-125)
>> @@ -99,12 +104,10 @@
>> #define __cdecl __attribute__((__cdecl__))
>> #define __UINT8_TYPE__ unsigned char
>> #define __NO_INLINE__ 1
>> -#define __i386 1
>> #define __FLT_MANT_DIG__ 24
>> #define __VERSION__ "4.7.2"
>> #define __UINT64_C(c) c ## ULL
>> #define __GCC_ATOMIC_INT_LOCK_FREE 2
>> -#define _X86_ 1
>> #define __FLOAT_WORD_ORDER__ __ORDER_LITTLE_ENDIAN__
>> #define __INT32_C(c) c
>> #define __DEC64_EPSILON__ 1E-15DD
>> @@ -113,18 +116,20 @@
>> #define __INT_FAST32_TYPE__ int
>> #define __UINT_LEAST16_TYPE__ short unsigned int
>> #define __INT16_MAX__ 32767
>> -#define __i386__ 1
>> -#define __SIZE_TYPE__ unsigned int
>> +#define __SIZE_TYPE__ long long unsigned int
>> #define __UINT64_MAX__ 18446744073709551615ULL
>> #define __INT8_TYPE__ signed char
>> #define __FLT_RADIX__ 2
>> #define __INT_LEAST16_TYPE__ short int
>> #define __LDBL_EPSILON__ 1.08420217248550443401e-19L
>> #define __UINTMAX_C(c) c ## ULL
>> +#define __SSE_MATH__ 1
>> #define __k8 1
>> +#define __SEH__ 1
>> #define __SIG_ATOMIC_MAX__ 2147483647
>> #define __GCC_ATOMIC_WCHAR_T_LOCK_FREE 2
>> -#define __SIZEOF_PTRDIFF_T__ 4
>> +#define __SIZEOF_PTRDIFF_T__ 8
>> +#define __x86_64__ 1
>> #define __DEC32_SUBNORMAL_MIN__ 0.000001E-95DF
>> #define __MSVCRT__ 1
>> #define __INT_FAST16_MAX__ 32767
>> @@ -149,7 +154,7 @@
>> #define __INT_LEAST8_TYPE__ signed char
>> #define __DEC32_MAX_EXP__ 97
>> #define __INT_FAST8_MAX__ 127
>> -#define __INTPTR_MAX__ 2147483647
>> +#define __INTPTR_MAX__ 9223372036854775807LL
>> #define __GXX_MERGED_TYPEINFO_NAMES 0
>> #define __stdcall __attribute__((__stdcall__))
>> #define __SSE2__ 1
>> @@ -157,20 +162,24 @@
>> #define __DBL_HAS_QUIET_NAN__ 1
>> #define __SIG_ATOMIC_MIN__ (-__SIG_ATOMIC_MAX__ - 1)
>> #define __k8__ 1
>> -#define __INTPTR_TYPE__ int
>> +#define __INTPTR_TYPE__ long long int
>> #define __UINT16_TYPE__ short unsigned int
>> #define __WCHAR_TYPE__ short unsigned int
>> #define __SIZEOF_FLOAT__ 4
>> -#define __UINTPTR_MAX__ 4294967295U
>> +#define __pic__ 1
>> +#define __UINTPTR_MAX__ 18446744073709551615ULL
>> #define __DEC64_MIN_EXP__ (-382)
>> #define __INT_FAST64_MAX__ 9223372036854775807LL
>> #define __GCC_ATOMIC_TEST_AND_SET_TRUEVAL 1
>> #define __FLT_DIG__ 6
>> #define __UINT_FAST64_TYPE__ long long unsigned int
>> #define __INT_MAX__ 2147483647
>> +#define __amd64__ 1
>> #define WIN32 1
>> #define __INT64_TYPE__ long long int
>> #define __FLT_MAX_EXP__ 128
>> +#define WIN64 1
>> +#define __ORDER_BIG_ENDIAN__ 4321
>> #define __DBL_MANT_DIG__ 53
>> #define __INT_LEAST64_MAX__ 9223372036854775807LL
>> #define __GCC_ATOMIC_CHAR16_T_LOCK_FREE 2
>> @@ -181,6 +190,7 @@
>> #define __SSE__ 1
>> #define __LDBL_MIN_EXP__ (-16381)
>> #define __INT_LEAST8_MAX__ 127
>> +#define __SIZEOF_INT128__ 16
>> #define __LDBL_MAX_10_EXP__ 4932
>> #define __ATOMIC_RELAXED 0
>> #define __DBL_EPSILON__ ((double)2.22044604925031308085e-16L)
>> @@ -193,13 +203,14 @@
>> #define __fastcall __attribute__((__fastcall__))
>> #define __DBL_DECIMAL_DIG__ 17
>> #define __DEC_EVAL_METHOD__ 2
>> -#define __ORDER_BIG_ENDIAN__ 4321
>> +#define __MINGW64__ 1
>> #define __UINT32_C(c) c ## U
>> #define __INTMAX_MAX__ 9223372036854775807LL
>> #define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__
>> #define WINNT 1
>> #define __FLT_DENORM_MIN__ 1.40129846432481707092e-45F
>> #define __INT8_MAX__ 127
>> +#define __PIC__ 1
>> #define __UINT_FAST32_TYPE__ unsigned int
>> #define __CHAR32_TYPE__ unsigned int
>> #define __FLT_MAX__ 3.40282346638528859812e+38F
>> @@ -207,7 +218,6 @@
>> #define __SIZEOF_DOUBLE__ 8
>> #define __FLT_MIN_10_EXP__ (-37)
>> #define __INTMAX_TYPE__ long long int
>> -#define i386 1
>> #define _INTEGRAL_MAX_BITS 64
>> #define __DEC128_MAX_EXP__ 6145
>> #define __ATOMIC_CONSUME 1
>> @@ -218,10 +228,10 @@
>> #define __LDBL_DENORM_MIN__ 3.64519953188247460253e-4951L
>> #define __INT16_C(c) c
>> #define __STDC__ 1
>> -#define __PTRDIFF_TYPE__ int
>> +#define __PTRDIFF_TYPE__ long long int
>> #define __ATOMIC_SEQ_CST 5
>> #define __UINT32_TYPE__ unsigned int
>> -#define __UINTPTR_TYPE__ unsigned int
>> +#define __UINTPTR_TYPE__ long long unsigned int
>> #define __DEC64_SUBNORMAL_MIN__ 0.000000000000001E-383DD
>> #define __DEC128_MANT_DIG__ 34
>> #define __LDBL_MIN_10_EXP__ (-4931)
>> @@ -233,6 +243,7 @@
>> #define __GNUC_GNU_INLINE__ 1
>> #define __GCC_ATOMIC_SHORT_LOCK_FREE 2
>> #define __UINT_FAST8_TYPE__ unsigned char
>> +#define __WIN64__ 1
>> #define __ATOMIC_ACQ_REL 4
>> #define __ATOMIC_RELEASE 3
>> #define __declspec(x) __attribute__((x))
>>
>>
>> 2012/12/24 Алексей Павлов <alex...@gmail.com>
>>
>>> Hi!
>>> This is only resolve a part of error. Error is present in 64-bit
>>> multilib builds if you try to execute example code with -m32 switch.
>>>
>>>
>>> 2012/12/20 Kai Tietz <ktiet...@googlemail.com>
>>>
>>>> 2012/12/20 Ruben Van Boxem <vanboxem.ru...@gmail.com>:
>>>> > Not to meddle in other people's affairs, but this is probably
>>>> valuable for
>>>> > v2 (unless v3 is due very very soon ;-))
>>>> >
>>>> > Ruben
>>>>
>>>> Back-merged at rev. 5509.
>>>>
>>>> Cheers,
>>>> Kai
>>>>
>>>>
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>>>
>>>
>>
>
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