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#include <stdio.h>
#include <stdint.h>
#include <stdint.h>
#include <jni.h>
#include <softfloat.h>
extern void miaou();
//#include <fenv.h>
//#pragma STDC FENV_ACCESS ON
//int applyRounding(int rounding){
// int ret = fegetround( );
// switch(rounding){
// case 0: fesetround(FE_TONEAREST); break;
// case 1: fesetround(FE_TOWARDZERO); break;
// case 2: fesetround(FE_DOWNWARD); break;
// case 3: fesetround(FE_UPWARD); break;
// }
// return ret;
//}
// const int originalRounding = applyRounding(rounding);
// fesetround(originalRounding);
void applyRounding(int rounding){
switch(rounding){
case 0: softfloat_roundingMode = 0; break;
case 1: softfloat_roundingMode = 1; break;
case 2: softfloat_roundingMode = 2; break;
case 3: softfloat_roundingMode = 3; break;
case 4: softfloat_roundingMode = 4; break;
}
}
#define API __attribute__((visibility("default")))
//float32_t toF32(float v){
// float32_t x;
// x.v = ;
// return x;
//}
#define toF32(v) (*((float32_t*)&v))
#define fromF32(x) (*((float*)&(x.v)))
#define toF64(v) (*((float64_t*)&v))
#define fromF64(x) (*((double*)&(x.v)))
JNIEXPORT jfloat API JNICALL Java_vexriscv_ip_fpu_FpuMath_addF32(JNIEnv * env, jobject obj, jfloat a, jfloat b, jint rounding){
applyRounding(rounding);
float32_t v = f32_add(toF32(a), toF32(b));
return fromF32(v);
}
JNIEXPORT jfloat API JNICALL Java_vexriscv_ip_fpu_FpuMath_mulF32(JNIEnv * env, jobject obj, jfloat a, jfloat b, jint rounding){
applyRounding(rounding);
float32_t v = f32_mul(toF32(a), toF32(b));
return fromF32(v);
}
JNIEXPORT jint API JNICALL Java_vexriscv_ip_fpu_FpuMath_mulFlagF32(JNIEnv * env, jobject obj, jfloat a, jfloat b, jint rounding){
applyRounding(rounding);
softfloat_exceptionFlags = 0;
float32_t v = f32_mul(toF32(a), toF32(b));
return softfloat_exceptionFlags;
}
JNIEXPORT jfloat API JNICALL Java_vexriscv_ip_fpu_FpuMath_d2f(JNIEnv * env, jobject obj, jdouble a, jint rounding){
applyRounding(rounding);
float32_t v = f64_to_f32(toF64(a));
return fromF32(v);
}
JNIEXPORT jint API JNICALL Java_vexriscv_ip_fpu_FpuMath_d2fFlag(JNIEnv * env, jobject obj, jdouble a, jint rounding){
applyRounding(rounding);
softfloat_exceptionFlags = 0;
float32_t v = f64_to_f32(toF64(a));
return softfloat_exceptionFlags;
}
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