0.19 failed on Activestates build system http://ppm4.activestate.com/MSWin32-x86/5.12/1200/S/SA/SALVA/Math-Int64-0.19.d/log-20120601T213822.txt. INT64_MAX is only in a Platform SDK header called intsafe.h. That was introduced somewhere between Studio 2005 and Studio 2008. My Studio 2003 doesn't have it, ActiveState doesn't have it.I added

static char *right_b_error        = "right-shift right operand is out 
+of bounds";
static char *right_error          = "right shift overflows";


#ifndef INT64_MAX
    #define INT64_MAX _I64_MAX
#endif
#ifndef INT64_MIN
    #define INT64_MIN _I64_MIN
#endif
#ifndef UINT64_MAX
    #define UINT64_MAX _UI64_MAX
#endif
#ifndef UINT32_MAX
    #define UINT32_MAX _UI32_MAX
#endif



#include "strtoint64.h"
#include "isaac64.h"
[download]

and that fixed the limit constants problem. There are still more problems. After fixing the limit constants problem I got this

Int64.c
Int64.xs(254) : error C2059: syntax error : 'bad suffix on number'
Int64.xs(254) : error C2146: syntax error : missing ')' before identif
+ier 'p63'
Int64.xs(254) : error C2144: syntax error : '<Unknown>' should be prec
+eded by '<
Unknown>'
Int64.xs(254) : error C2144: syntax error : '<Unknown>' should be prec
+eded by '<
Unknown>'
Int64.xs(254) : error C2143: syntax error : missing ')' before 'identi
+fier'
Int64.xs(254) : error C2059: syntax error : 'bad suffix on number'
Int64.xs(255) : warning C4244: 'return' : conversion from 'NV' to 'int
+64_t', pos
sible loss of data
Int64.xs(334) : error C2059: syntax error : 'bad suffix on number'
Int64.xs(334) : error C2146: syntax error : missing ')' before identif
+ier 'p64'
Int64.xs(334) : error C2144: syntax error : '<Unknown>' should be prec
+eded by '<
Unknown>'
Int64.xs(334) : error C2144: syntax error : '<Unknown>' should be prec
+eded by '<
Unknown>'
Int64.xs(334) : error C2143: syntax error : missing ')' before 'identi
+fier'
[download]

VC is complaining about these strange constants.

            if (may_die_on_overflow &&
                ((nv >= 0x1p63) || (nv < -0x1p63))) overflow(aTHX_ out
+_of_bounds_error_s);
            return nv;
[download]

This isn't C89. http://msdn.microsoft.com/en-us/library/w9bk1wcy%28v=vs.80%29.aspx http://msdn.microsoft.com/en-us/library/2k2xf226%28v=vs.80%29. So this will never compile on Visual C unless its fixed. I don't know how to fix that myself. So what is 0x1p63 as a normal C literal?

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