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/** casts between bit-precise integers and float
width: 2, 4, 6, 7, 8, 9, 15, 16, 17, 24, 32, 33, 40, 48, 63, 64, 65
sign: unsigned, signed
*/
#include <testfwk.h>
#include <float.h>
// clang 11 supports bit-precise types, but deviates a bit from C23.
#if __clang_major__ == 11
#define __SDCC_BITINT_MAXWIDTH 128
#define _BitInt _ExtInt
#endif
#if __SDCC_BITINT_MAXWIDTH >= {width} // TODO: When we can regression-test in --std-c23 mode, use the standard macro from limits.h instead!
typedef {sign} _BitInt({width}) bitinttype;
float to_float(bitinttype b)
{
return(b);
}
#endif
void testCast (void)
{
#if __SDCC_BITINT_MAXWIDTH >= {width} // TODO: When we can regression-test in --std-c23 mode, use the standard macro from limits.h instead!
bitinttype b;
b = 1;
ASSERT (to_float (b) == (float)b);
b = 23;
ASSERT (to_float (b) == (float)b);
#if {width} <= FLT_MANT_DIG
b = -1;
ASSERT (to_float (b) == (float)b);
b = -23;
ASSERT (to_float (b) == (float)b);
#endif
#endif
}
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