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| author | Andrew Waterman <waterman@s144.Millennium.Berkeley.EDU> | 2010-10-15 16:17:53 -0700 |
|---|---|---|
| committer | Andrew Waterman <waterman@s144.Millennium.Berkeley.EDU> | 2010-10-15 16:17:53 -0700 |
| commit | ab928baadbfd3316988a3ad5b5d9b84693a8636f (patch) | |
| tree | b464ce729d53aeff072ed2c341b06194e9ea174b /softfloat/f32_to_i32_r_minMag.c | |
| parent | d3cb781e165427412b299b6034289b8458472790 (diff) | |
| download | riscv-isa-sim-ab928baadbfd3316988a3ad5b5d9b84693a8636f.zip riscv-isa-sim-ab928baadbfd3316988a3ad5b5d9b84693a8636f.tar.gz riscv-isa-sim-ab928baadbfd3316988a3ad5b5d9b84693a8636f.tar.bz2 | |
[sim] made softfloat files C instead of C++
Diffstat (limited to 'softfloat/f32_to_i32_r_minMag.c')
| -rwxr-xr-x | softfloat/f32_to_i32_r_minMag.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/softfloat/f32_to_i32_r_minMag.c b/softfloat/f32_to_i32_r_minMag.c new file mode 100755 index 0000000..63ff1e2 --- /dev/null +++ b/softfloat/f32_to_i32_r_minMag.c @@ -0,0 +1,45 @@ +
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+int_fast32_t f32_to_i32_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;
+ int_fast32_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 = 0x9E - exp;
+ if ( shiftCount <= 0 ) {
+ if ( uiA != packToF32UI( 1, 0x9E, 0 ) ) {
+ softfloat_raiseFlags( softfloat_flag_invalid );
+ if ( ! sign || ( ( exp == 0xFF ) && sig ) ) return 0x7FFFFFFF;
+ }
+ return -0x7FFFFFFF - 1;
+ }
+ sig = ( sig | 0x00800000 )<<8;
+ absZ = sig>>shiftCount;
+ if ( exact && (uint32_t) ( sig<<( ( - shiftCount ) & 31 ) ) ) {
+ softfloat_exceptionFlags |= softfloat_flag_inexact;
+ }
+ return sign ? - absZ : absZ;
+
+}
+
|