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/*
* Copyright (C) 2005 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "Float"
#include "JNIHelp.h"
#include "JniConstants.h"
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
union Float {
unsigned int bits;
float f;
};
static const jint NaN = 0x7fc00000;
static jint Float_floatToIntBits(JNIEnv*, jclass, jfloat val) {
Float f;
f.f = val;
// For this method all values in the NaN range are normalized to the canonical NaN value.
return isnanf(f.f) ? NaN : f.bits;
}
jint Float_floatToRawIntBits(JNIEnv*, jclass, jfloat val) {
Float f;
f.f = val;
return f.bits;
}
jfloat Float_intBitsToFloat(JNIEnv*, jclass, jint val) {
Float f;
f.bits = val;
return f.f;
}
static JNINativeMethod gMethods[] = {
NATIVE_METHOD(Float, floatToIntBits, "(F)I"),
NATIVE_METHOD(Float, floatToRawIntBits, "(F)I"),
NATIVE_METHOD(Float, intBitsToFloat, "(I)F"),
};
int register_java_lang_Float(JNIEnv* env) {
return jniRegisterNativeMethods(env, "java/lang/Float", gMethods, NELEM(gMethods));
}
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