[sim] added SoftFloat-3 source

[riscv-isa-sim.git] / softfloat / SoftFloat-3 / source / f32_to_i32_r_minMag.c

diff --git a/softfloat/SoftFloat-3/source/f32_to_i32_r_minMag.c b/softfloat/SoftFloat-3/source/f32_to_i32_r_minMag.c
new file mode 100755 (executable)
index 0000000..63ff1e2
--- /dev/null
+++ b/softfloat/SoftFloat-3/source/f32_to_i32_r_minMag.c
@@ -0,0 +1,45 @@
+\r
+#include <stdbool.h>\r
+#include <stdint.h>\r
+#include "platform.h"\r
+#include "internals.h"\r
+#include "softfloat.h"\r
+\r
+int_fast32_t f32_to_i32_r_minMag( float32_t a, bool exact )\r
+{\r
+    union ui32_f32 uA;\r
+    uint_fast32_t uiA;\r
+    int_fast16_t exp;\r
+    uint_fast32_t sig;\r
+    bool sign;\r
+    int_fast16_t shiftCount;\r
+    int_fast32_t absZ;\r
+\r
+    uA.f = a;\r
+    uiA = uA.ui;\r
+    exp = expF32UI( uiA );\r
+    sig = fracF32UI( uiA );\r
+    if ( exp < 0x7F ) {\r
+        if ( exact && ( exp | sig ) ) {\r
+            softfloat_exceptionFlags |= softfloat_flag_inexact;\r
+        }\r
+        return 0;\r
+    }\r
+    sign = signF32UI( uiA );\r
+    shiftCount = 0x9E - exp;\r
+    if ( shiftCount <= 0 ) {\r
+        if ( uiA != packToF32UI( 1, 0x9E, 0 ) ) {\r
+            softfloat_raiseFlags( softfloat_flag_invalid );\r
+            if ( ! sign || ( ( exp == 0xFF ) && sig ) ) return 0x7FFFFFFF;\r
+        }\r
+        return -0x7FFFFFFF - 1;\r
+    }\r
+    sig = ( sig | 0x00800000 )<<8;\r
+    absZ = sig>>shiftCount;\r
+    if ( exact && (uint32_t) ( sig<<( ( - shiftCount ) & 31 ) ) ) {\r
+        softfloat_exceptionFlags |= softfloat_flag_inexact;\r
+    }\r
+    return sign ? - absZ : absZ;\r
+\r
+}\r
+\r