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25 lines
608 B
25 lines
608 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 "primitives.h"
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#include "internals.h"
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float32_t
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softfloat_normRoundPackToF32( bool sign, int_fast16_t exp, uint_fast32_t sig )
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{
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int shiftCount;
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union ui32_f32 uZ;
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shiftCount = softfloat_countLeadingZeros32( sig ) - 1;
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exp -= shiftCount;
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if ( ( 7 <= shiftCount ) && ( (uint16_t) exp < 0xFD ) ) {
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uZ.ui = packToF32UI( sign, sig ? exp : 0, sig<<( shiftCount - 7 ) );
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return uZ.f;
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} else {
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return softfloat_roundPackToF32( sign, exp, sig<<shiftCount );
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}
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}
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