diff options
Diffstat (limited to 'softfloat/f32_to_i64_r_minMag.c')
-rwxr-xr-x | softfloat/f32_to_i64_r_minMag.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/softfloat/f32_to_i64_r_minMag.c b/softfloat/f32_to_i64_r_minMag.c new file mode 100755 index 0000000..33bff93 --- /dev/null +++ b/softfloat/f32_to_i64_r_minMag.c @@ -0,0 +1,52 @@ +
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+int_fast64_t f32_to_i64_r_minMag( float32_t a, bool exact )
+{
+ union ui32_f32 uA;
+ uint_fast32_t uiA;
+ int_fast16_t exp;
+ uint_fast32_t sig;
+ bool sign;
+ int_fast16_t shiftCount;
+ uint_fast64_t sig64;
+ int_fast64_t absZ;
+
+ uA.f = a;
+ uiA = uA.ui;
+ exp = expF32UI( uiA );
+ sig = fracF32UI( uiA );
+ if ( exp < 0x7F ) {
+ if ( exact && ( exp | sig ) ) {
+ softfloat_exceptionFlags |= softfloat_flag_inexact;
+ }
+ return 0;
+ }
+ sign = signF32UI( uiA );
+ shiftCount = 0xBE - exp;
+ if ( shiftCount <= 0 ) {
+ if ( uiA != packToF32UI( 1, 0xBE, 0 ) ) {
+ softfloat_raiseFlags( softfloat_flag_invalid );
+ if ( ! sign || ( ( exp == 0xFF ) && sig ) ) {
+ return INT64_C( 0x7FFFFFFFFFFFFFFF );
+ }
+ }
+ return - INT64_C( 0x7FFFFFFFFFFFFFFF ) - 1;
+ }
+ sig |= 0x00800000;
+ sig64 = (uint_fast64_t) sig<<40;
+ absZ = sig64>>shiftCount;
+ shiftCount = 40 - shiftCount;
+ if (
+ exact && ( shiftCount < 0 ) && (uint32_t) ( sig<<( shiftCount & 31 ) )
+ ) {
+ softfloat_exceptionFlags |= softfloat_flag_inexact;
+ }
+ return sign ? - absZ : absZ;
+
+}
+
|