uint_fast32_t f128_to_ui32( float128_t a, uint_fast8_t roundingMode, bool exact ) { union ui128_f128 uA; uint_fast64_t uiA64, uiA0; bool sign; int_fast32_t exp; uint_fast64_t sig64; int_fast32_t shiftDist; /*------------------------------------------------------------------------ *------------------------------------------------------------------------*/ uA.f = a; uiA64 = uA.ui.v64; uiA0 = uA.ui.v0; sign = signF128UI64( uiA64 ); exp = expF128UI64( uiA64 ); sig64 = fracF128UI64( uiA64 ) | (uiA0 != 0); /*------------------------------------------------------------------------ *------------------------------------------------------------------------*/ #if (ui32_fromNaN != ui32_fromPosOverflow) || (ui32_fromNaN != ui32_fromNegOverflow) if ( (exp == 0x7FFF) && sig64 ) { #if (ui32_fromNaN == ui32_fromPosOverflow) sign = 0; #elif (ui32_fromNaN == ui32_fromNegOverflow) sign = 1; #else softfloat_raiseFlags( softfloat_flag_invalid ); return ui32_fromNaN; #endif } #endif /*------------------------------------------------------------------------ *------------------------------------------------------------------------*/ if ( exp ) sig64 |= UINT64_C( 0x0001000000000000 ); shiftDist = 0x4023 - exp; if ( 0 < shiftDist ) { sig64 = softfloat_shiftRightJam64( sig64, shiftDist ); } return softfloat_roundToUI32( sign, sig64, roundingMode, exact ); }
uint_fast32_t f64_to_ui32( float64_t a, uint_fast8_t roundingMode, bool exact ) { union ui64_f64 uA; uint_fast64_t uiA; bool sign; int_fast16_t exp; uint_fast64_t sig; int_fast16_t shiftDist; /*------------------------------------------------------------------------ *------------------------------------------------------------------------*/ uA.f = a; uiA = uA.ui; sign = signF64UI( uiA ); exp = expF64UI( uiA ); sig = fracF64UI( uiA ); /*------------------------------------------------------------------------ *------------------------------------------------------------------------*/ #if (ui32_fromNaN != ui32_fromPosOverflow) || (ui32_fromNaN != ui32_fromNegOverflow) if ( (exp == 0x7FF) && sig ) { #if (ui32_fromNaN == ui32_fromPosOverflow) sign = 0; #elif (ui32_fromNaN == ui32_fromNegOverflow) sign = 1; #else softfloat_raiseFlags( softfloat_flag_invalid ); return ui32_fromNaN; #endif } #endif /*------------------------------------------------------------------------ *------------------------------------------------------------------------*/ if ( exp ) sig |= UINT64_C( 0x0010000000000000 ); shiftDist = 0x427 - exp; if ( 0 < shiftDist ) sig = softfloat_shiftRightJam64( sig, shiftDist ); return softfloat_roundToUI32( sign, sig, roundingMode, exact ); }