libgcc/m68k: Fixes for soft float #93
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Check for non-zero denorm in __adddf3. Need to check both the upper and lower 32-bit chunks of a 64-bit float for a non-zero value when checking to see if the value is -0. Fix __addsf3 when the sum exponent is exactly 0xff to ensure that produces infinity and not nan. Handle converting NaN/inf values between formats. Handle underflow and overflow when truncating. Write a replacement for __fixxfsi so that it does not raise extra exceptions during an extra conversion from long double to double. Return correctly signed zero on float and double divide underflow Return positive qNaN instead of negative. Signed-off-by: Keith Packard <keithp@keithp.com>
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Check for non-zero denorm in __adddf3. Need to check both the upper and lower 32-bit chunks of a 64-bit float for a non-zero value when checking to see if the value is -0.
Fix __addsf3 when the sum exponent is exactly 0xff to ensure that produces infinity and not nan.
Handle converting NaN/inf values between formats.
Handle underflow and overflow when truncating.
Write a replacement for __fixxfsi so that it does not raise extra exceptions during an extra conversion from long double to double.