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Diffstat (limited to 'libjava/java/lang/VMFloat.java')
-rw-r--r-- | libjava/java/lang/VMFloat.java | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/libjava/java/lang/VMFloat.java b/libjava/java/lang/VMFloat.java deleted file mode 100644 index 72a8c3c..0000000 --- a/libjava/java/lang/VMFloat.java +++ /dev/null @@ -1,121 +0,0 @@ -/* 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 |