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| author | Andrew Waterman <waterman@s141.Millennium.Berkeley.EDU> | 2011-06-19 20:47:29 -0700 |
|---|---|---|
| committer | Andrew Waterman <waterman@s141.Millennium.Berkeley.EDU> | 2011-06-19 20:47:29 -0700 |
| commit | 77452a26e7d95d29dbaa797595ae683f03a3345b (patch) | |
| tree | e7aaae682f73a20ceb4d3366528b0cd38378f49d /softfloat/f32_to_i32.c | |
| parent | 740f981cfd55604d46598144dccac26dd53f643c (diff) | |
| download | spike-77452a26e7d95d29dbaa797595ae683f03a3345b.zip spike-77452a26e7d95d29dbaa797595ae683f03a3345b.tar.gz spike-77452a26e7d95d29dbaa797595ae683f03a3345b.tar.bz2 | |
temporary undoing of renaming
Diffstat (limited to 'softfloat/f32_to_i32.c')
| -rwxr-xr-x | softfloat/f32_to_i32.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/softfloat/f32_to_i32.c b/softfloat/f32_to_i32.c new file mode 100755 index 0000000..bbbaee0 --- /dev/null +++ b/softfloat/f32_to_i32.c @@ -0,0 +1,34 @@ +
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+#include "internals.h"
+#include "softfloat.h"
+
+int_fast32_t f32_to_i32( float32_t a, int_fast8_t roundingMode, bool exact )
+{
+ union ui32_f32 uA;
+ uint_fast32_t uiA;
+ bool sign;
+ int_fast16_t exp;
+ uint_fast32_t sig;
+ uint_fast64_t sig64;
+ int_fast16_t shiftCount;
+
+ uA.f = a;
+ uiA = uA.ui;
+ sign = signF32UI( uiA );
+ exp = expF32UI( uiA );
+ sig = fracF32UI( uiA );
+ if ( ( exp == 0xFF ) && sig ) sign = 0;
+ if ( exp ) sig |= 0x00800000;
+ sig64 = (uint_fast64_t) sig<<32;
+ shiftCount = 0xAF - exp;
+ if ( 0 < shiftCount ) {
+ sig64 = softfloat_shift64RightJam( sig64, shiftCount );
+ }
+ return softfloat_roundPackToI32( sign, sig64, roundingMode, exact );
+
+}
+
|