Hi,
I'm trying to do conversions between floats and doubles. I have the
following variables:
FlpCompDouble float_d;
FlpCompFloat float_f;
These are defined in FloatMgr.h as:
typedef union {
double d; // for easy assignment of values
FlpDouble fd; // for calling New Floating
point manager routines
UInt32 ul[2]; // for accessing upper and lower longs
FlpDoubleBits fdb; // for accessing specific fields
} FlpCompDouble;
typedef union {
float f; // for easy assignment of values
FlpFloat ff; // for calling New Floating
point manager routines
UInt32 ul; // for accessing bits of the float
} FlpCompFloat;
It also defines the following conversion routines:
FlpFloat _d_dtof(FlpDouble) FLOAT_EM_TRAP(sysFloatEm_d_dtof);
FlpDouble _f_ftod(FlpFloat)
FLOAT_EM_TRAP(sysFloatEm_f_ftod);
If I convert like this:
float_d.d = (double) 97.0;
float_f.ff = _d_dtof(float_d.fd);
and then look at the value of float_f.f everything is correct. However, if I
try to convert like this:
float_f.f = (float) 97.0;
float_d.fd = _f_ftod(float_f.ff);
I get a "bus error" on the _f_ftod call. I've tried this with both the
Release and Debug 3.3 and 3.5 ROMs. Any ideas what I'm doing wrong? Thanks
in advance for any help on this.
Tom
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