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-/* VMFloat.java -- VM Specific Float methods
- Copyright (C) 2003, 2006 Free Software Foundation
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-package java.lang;
-
-import gnu.classpath.Configuration;
-
-/*
- * This class is a reference version, mainly for compiling a class library
- * jar. It is likely that VM implementers replace this with their own
- * version that can communicate effectively with the VM.
- */
-
-/**
- * Code relocated from java.lang.Float by
- * @author Dave Grove <groved@us.ibm.com>
- */
-final class VMFloat
-{
- /**
- * Convert the float to the IEEE 754 floating-point "single format" bit
- * layout. Bit 31 (the most significant) is the sign bit, bits 30-23
- * (masked by 0x7f800000) represent the exponent, and bits 22-0
- * (masked by 0x007fffff) are the mantissa. This function collapses all
- * versions of NaN to 0x7fc00000. The result of this function can be used
- * as the argument to <code>Float.intBitsToFloat(int)</code> to obtain the
- * original <code>float</code> value.
- *
- * @param value the <code>float</code> to convert
- * @return the bits of the <code>float</code>
- * @see #intBitsToFloat(int)
- */
- static native int floatToIntBits(float value);
-
- /**
- * Convert the float to the IEEE 754 floating-point "single format" bit
- * layout. Bit 31 (the most significant) is the sign bit, bits 30-23
- * (masked by 0x7f800000) represent the exponent, and bits 22-0
- * (masked by 0x007fffff) are the mantissa. This function leaves NaN alone,
- * rather than collapsing to a canonical value. The result of this function
- * can be used as the argument to <code>Float.intBitsToFloat(int)</code> to
- * obtain the original <code>float</code> value.
- *
- * @param value the <code>float</code> to convert
- * @return the bits of the <code>float</code>
- * @see #intBitsToFloat(int)
- */
- static native int floatToRawIntBits(float value);
-
- /**
- * Convert the argument in IEEE 754 floating-point "single format" bit
- * layout to the corresponding float. Bit 31 (the most significant) is the
- * sign bit, bits 30-23 (masked by 0x7f800000) represent the exponent, and
- * bits 22-0 (masked by 0x007fffff) are the mantissa. This function leaves
- * NaN alone, so that you can recover the bit pattern with
- * <code>Float.floatToRawIntBits(float)</code>.
- *
- * @param bits the bits to convert
- * @return the <code>float</code> represented by the bits
- * @see #floatToIntBits(float)
- * @see #floatToRawIntBits(float)
- */
- static native float intBitsToFloat(int bits);
-
- /**
- * @param f the <code>float</code> to convert
- * @return the <code>String</code> representing the <code>float</code>
- */
- static String toString(float f)
- {
- return VMDouble.toString(f, true);
- }
-
- /**
- * @param str the <code>String</code> to convert
- * @return the <code>float</code> value of <code>s</code>
- * @throws NumberFormatException if <code>str</code> cannot be parsed as a
- * <code>float</code>
- * @throws NullPointerException if <code>str</code> is null
- */
- static float parseFloat(String str)
- {
- // XXX Rounding parseDouble() causes some errors greater than 1 ulp from
- // the infinitely precise decimal.
- return (float) Double.parseDouble(str);
- }
-} // class VMFloat