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22 lines
446 B
22 lines
446 B
15 years ago
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#include <stdbool.h>
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#include <stdint.h>
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#include "platform.h"
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#include "internals.h"
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#include "softfloat.h"
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float64_t i64_to_f64( int_fast64_t a )
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{
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bool sign;
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union ui64_f64 uZ;
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sign = ( a < 0 );
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if ( ! ( a & UINT64_C( 0x7FFFFFFFFFFFFFFF ) ) ) {
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uZ.ui = sign ? packToF64UI( 1, 0x43E, 0 ) : 0;
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return uZ.f;
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}
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return softfloat_normRoundPackToF64( sign, 0x43C, sign ? - a : a );
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}
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