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Annotation of tme/ic/ieee754/softfloat-tme.h, revision 1.1

1.1     ! root        1: /* $Id: softfloat-tme.h,v 1.1 2005/02/17 12:17:58 fredette Exp $ */
        !             2: 
        !             3: /* ic/ieee754/softfloat-tme.h - this glues tme to SoftFloat: */
        !             4: 
        !             5: /*
        !             6:  * Copyright (c) 2004 Matt Fredette
        !             7:  * All rights reserved.
        !             8:  *
        !             9:  * Redistribution and use in source and binary forms, with or without
        !            10:  * modification, are permitted provided that the following conditions
        !            11:  * are met:
        !            12:  * 1. Redistributions of source code must retain the above copyright
        !            13:  *    notice, this list of conditions and the following disclaimer.
        !            14:  * 2. Redistributions in binary form must reproduce the above copyright
        !            15:  *    notice, this list of conditions and the following disclaimer in the
        !            16:  *    documentation and/or other materials provided with the distribution.
        !            17:  * 3. All advertising materials mentioning features or use of this software
        !            18:  *    must display the following acknowledgement:
        !            19:  *      This product includes software developed by Matt Fredette.
        !            20:  * 4. The name of the author may not be used to endorse or promote products
        !            21:  *    derived from this software without specific prior written permission.
        !            22:  *
        !            23:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            24:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
        !            25:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
        !            26:  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
        !            27:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
        !            28:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
        !            29:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
        !            31:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
        !            32:  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
        !            33:  * POSSIBILITY OF SUCH DAMAGE.
        !            34:  */
        !            35: 
        !            36: /*============================================================================
        !            37: 
        !            38: This C header file is part of the SoftFloat IEC/IEEE Floating-point Arithmetic
        !            39: Package, Release 2b.
        !            40: 
        !            41: This C source fragment is part of the SoftFloat IEC/IEEE Floating-point
        !            42: Arithmetic Package, Release 2b.
        !            43: 
        !            44: Written by John R. Hauser.  This work was made possible in part by the
        !            45: International Computer Science Institute, located at Suite 600, 1947 Center
        !            46: Street, Berkeley, California 94704.  Funding was partially provided by the
        !            47: National Science Foundation under grant MIP-9311980.  The original version
        !            48: of this code was written as part of a project to build a fixed-point vector
        !            49: processor in collaboration with the University of California at Berkeley,
        !            50: overseen by Profs. Nelson Morgan and John Wawrzynek.  More information
        !            51: is available through the Web page `http://www.cs.berkeley.edu/~jhauser/
        !            52: arithmetic/SoftFloat.html'.
        !            53: 
        !            54: THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has
        !            55: been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
        !            56: RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
        !            57: AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,
        !            58: COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE
        !            59: EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE
        !            60: INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR
        !            61: OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.
        !            62: 
        !            63: Derivative works are acceptable, even for commercial purposes, so long as
        !            64: (1) the source code for the derivative work includes prominent notice that
        !            65: the work is derivative, and (2) the source code includes prominent notice with
        !            66: these four paragraphs for those parts of this code that are retained.
        !            67: 
        !            68: =============================================================================*/
        !            69: 
        !            70: #ifndef _IC_IEEE754_SOFTFLOAT_TME_H
        !            71: #define _IC_IEEE754_SOFTFLOAT_TME_H
        !            72: 
        !            73: #include <tme/common.h>
        !            74: _TME_RCSID("$Id: softfloat-tme.h,v 1.1 2005/02/17 12:17:58 fredette Exp $");
        !            75: 
        !            76: /* includes: */
        !            77: #include <tme/ic/ieee754.h>
        !            78: 
        !            79: #ifdef _TME_IEEE754_SOFTFLOAT_GLUE
        !            80: 
        !            81: /* create an alternate definition of struct _tme_ieee754_extended80 to
        !            82:    use as the SoftFloat 80-bit extended precision type: */
        !            83: #undef TME_FLOAT_FORMAT_IEEE754_EXTENDED80
        !            84: #define tme_float_ieee754_extended80 _floatx80
        !            85: #define tme_float_ieee754_extended80_significand low
        !            86: #define tme_float_ieee754_extended80_sexp high
        !            87: 
        !            88: /* actually create the alternate definitions: */
        !            89: #include <tme/generic/float.h>
        !            90: 
        !            91: #endif /* _TME_IEEE754_SOFTFLOAT_GLUE */
        !            92: 
        !            93: /* if a 64-bit integral type is available: */
        !            94: #ifdef TME_HAVE_INT64_T
        !            95: 
        !            96: /* enable SoftFloat support for the extended and quad formats: */
        !            97: #define FLOATX80
        !            98: #define FLOAT128
        !            99: 
        !           100: /* the SoftFloat types: */
        !           101: typedef tme_uint32_t float32;
        !           102: typedef tme_uint64_t float64;
        !           103: typedef struct tme_float_ieee754_extended80 floatx80;
        !           104: typedef struct {
        !           105: #ifdef _TME_WORDS_BIGENDIAN
        !           106:   tme_uint64_t high;
        !           107:   tme_uint64_t low;
        !           108: #else  /* !_TME_WORDS_BIGENDIAN */
        !           109:   tme_uint64_t low;
        !           110:   tme_uint64_t high;
        !           111: #endif /* !_TME_WORDS_BIGENDIAN */
        !           112: } float128;
        !           113: 
        !           114: #else  /* !TME_HAVE_INT64_T */
        !           115: 
        !           116: /* the SoftFloat types: */
        !           117: typedef tme_uint32_t float32;
        !           118: typedef struct {
        !           119: #ifdef _TME_WORDS_BIGENDIAN
        !           120:   tme_uint32_t high;
        !           121:   tme_uint32_t low;
        !           122: #else  /* !_TME_WORDS_BIGENDIAN */
        !           123:   tme_uint32_t low;
        !           124:   tme_uint32_t high;
        !           125: #endif /* !_TME_WORDS_BIGENDIAN */
        !           126: } float64;
        !           127: 
        !           128: #endif /* !TME_HAVE_INT64_T */
        !           129: 
        !           130: /* undefine all SoftFloat glue magic: */
        !           131: #undef tme_float_ieee754_extended80
        !           132: #undef tme_float_ieee754_extended80_significand
        !           133: #undef tme_float_ieee754_extended80_sexp
        !           134: 
        !           135: /*----------------------------------------------------------------------------
        !           136: | Each of the following `typedef's defines the most convenient type that holds
        !           137: | integers of at least as many bits as specified.  For example, `uint8' should
        !           138: | be the most convenient type that can hold unsigned integers of as many as
        !           139: | 8 bits.  The `flag' type must be able to hold either a 0 or 1.  For most
        !           140: | implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed
        !           141: | to the same as `int'.
        !           142: *----------------------------------------------------------------------------*/
        !           143: typedef tme_uint8_t flag;
        !           144: typedef tme_uint8_t uint8;
        !           145: typedef tme_int8_t int8;
        !           146: typedef int uint16;
        !           147: typedef int int16;
        !           148: typedef tme_uint32_t uint32;
        !           149: typedef tme_int32_t int32;
        !           150: #ifdef TME_HAVE_INT64_T
        !           151: typedef tme_uint64_t uint64;
        !           152: typedef tme_int64_t int64;
        !           153: #endif /* TME_HAVE_INT64_T */
        !           154: 
        !           155: /*----------------------------------------------------------------------------
        !           156: | Each of the following `typedef's defines a type that holds integers
        !           157: | of _exactly_ the number of bits specified.  For instance, for most
        !           158: | implementation of C, `bits16' and `sbits16' should be `typedef'ed to
        !           159: | `unsigned short int' and `signed short int' (or `short int'), respectively.
        !           160: *----------------------------------------------------------------------------*/
        !           161: typedef tme_uint8_t bits8;
        !           162: typedef tme_int8_t sbits8;
        !           163: typedef tme_uint16_t bits16;
        !           164: typedef tme_int16_t sbits16;
        !           165: typedef tme_uint32_t bits32;
        !           166: typedef tme_int32_t sbits32;
        !           167: #ifdef TME_HAVE_INT64_T
        !           168: typedef tme_uint64_t bits64;
        !           169: typedef tme_int64_t sbits64;
        !           170: #endif /* TME_HAVE_INT64_T */
        !           171: 
        !           172: /*----------------------------------------------------------------------------
        !           173: | Software IEC/IEEE integer-to-floating-point conversion routines.
        !           174: *----------------------------------------------------------------------------*/
        !           175: float32 int32_to_float32 _TME_P(( tme_int32_t ));
        !           176: float64 int32_to_float64 _TME_P(( tme_int32_t ));
        !           177: #ifdef FLOATX80
        !           178: floatx80 int32_to_floatx80 _TME_P(( tme_int32_t ));
        !           179: #endif /* FLOATX80 */
        !           180: #ifdef FLOAT128
        !           181: float128 int32_to_float128 _TME_P(( tme_int32_t ));
        !           182: #endif /* FLOAT128 */
        !           183: #ifdef TME_HAVE_INT64_T
        !           184: float32 int64_to_float32 _TME_P(( tme_int64_t ));
        !           185: float64 int64_to_float64 _TME_P(( tme_int64_t ));
        !           186: #endif /* TME_HAVE_INT64_T */
        !           187: #ifdef FLOATX80
        !           188: floatx80 int64_to_floatx80 _TME_P(( tme_int64_t ));
        !           189: #endif /* FLOATX80 */
        !           190: #ifdef FLOAT128
        !           191: float128 int64_to_float128 _TME_P(( tme_int64_t ));
        !           192: #endif /* FLOAT128 */
        !           193: 
        !           194: /*----------------------------------------------------------------------------
        !           195: | Software IEC/IEEE single-precision conversion routines.
        !           196: *----------------------------------------------------------------------------*/
        !           197: tme_int32_t float32_to_int32 _TME_P(( float32 ));
        !           198: tme_int32_t float32_to_int32_round_to_zero _TME_P(( float32 ));
        !           199: #ifdef TME_HAVE_INT64_T
        !           200: tme_int64_t float32_to_int64 _TME_P(( float32 ));
        !           201: tme_int64_t float32_to_int64_round_to_zero _TME_P(( float32 ));
        !           202: #endif /* TME_HAVE_INT64_T */
        !           203: float64 float32_to_float64 _TME_P(( float32 ));
        !           204: #ifdef FLOATX80
        !           205: floatx80 float32_to_floatx80 _TME_P(( float32 ));
        !           206: #endif /* FLOATX80 */
        !           207: #ifdef FLOAT128
        !           208: float128 float32_to_float128 _TME_P(( float32 ));
        !           209: #endif /* FLOAT128 */
        !           210: 
        !           211: /*----------------------------------------------------------------------------
        !           212: | Software IEC/IEEE single-precision operations.
        !           213: *----------------------------------------------------------------------------*/
        !           214: float32 float32_round_to_int _TME_P(( float32 ));
        !           215: float32 float32_add _TME_P(( float32, float32 ));
        !           216: float32 float32_sub _TME_P(( float32, float32 ));
        !           217: float32 float32_mul _TME_P(( float32, float32 ));
        !           218: float32 float32_div _TME_P(( float32, float32 ));
        !           219: float32 float32_rem _TME_P(( float32, float32 ));
        !           220: float32 float32_sqrt _TME_P(( float32 ));
        !           221: flag float32_eq _TME_P(( float32, float32 ));
        !           222: flag float32_le _TME_P(( float32, float32 ));
        !           223: flag float32_lt _TME_P(( float32, float32 ));
        !           224: flag float32_eq_signaling _TME_P(( float32, float32 ));
        !           225: flag float32_le_quiet _TME_P(( float32, float32 ));
        !           226: flag float32_lt_quiet _TME_P(( float32, float32 ));
        !           227: 
        !           228: /*----------------------------------------------------------------------------
        !           229: | Software IEC/IEEE double-precision conversion routines.
        !           230: *----------------------------------------------------------------------------*/
        !           231: tme_int32_t float64_to_int32 _TME_P(( float64 ));
        !           232: tme_int32_t float64_to_int32_round_to_zero _TME_P(( float64 ));
        !           233: #ifdef TME_HAVE_INT64_T
        !           234: tme_int64_t float64_to_int64 _TME_P(( float64 ));
        !           235: tme_int64_t float64_to_int64_round_to_zero _TME_P(( float64 ));
        !           236: #endif /* TME_HAVE_INT64_T */
        !           237: float32 float64_to_float32 _TME_P(( float64 ));
        !           238: #ifdef FLOATX80
        !           239: floatx80 float64_to_floatx80 _TME_P(( float64 ));
        !           240: #endif /* FLOATX80 */
        !           241: #ifdef FLOAT128
        !           242: float128 float64_to_float128 _TME_P(( float64 ));
        !           243: #endif /* FLOAT128 */
        !           244: 
        !           245: /*----------------------------------------------------------------------------
        !           246: | Software IEC/IEEE double-precision operations.
        !           247: *----------------------------------------------------------------------------*/
        !           248: float64 float64_round_to_int _TME_P(( float64 ));
        !           249: float64 float64_add _TME_P(( float64, float64 ));
        !           250: float64 float64_sub _TME_P(( float64, float64 ));
        !           251: float64 float64_mul _TME_P(( float64, float64 ));
        !           252: float64 float64_div _TME_P(( float64, float64 ));
        !           253: float64 float64_rem _TME_P(( float64, float64 ));
        !           254: float64 float64_sqrt _TME_P(( float64 ));
        !           255: flag float64_eq _TME_P(( float64, float64 ));
        !           256: flag float64_le _TME_P(( float64, float64 ));
        !           257: flag float64_lt _TME_P(( float64, float64 ));
        !           258: flag float64_eq_signaling _TME_P(( float64, float64 ));
        !           259: flag float64_le_quiet _TME_P(( float64, float64 ));
        !           260: flag float64_lt_quiet _TME_P(( float64, float64 ));
        !           261: 
        !           262: #ifdef FLOATX80
        !           263: 
        !           264: /*----------------------------------------------------------------------------
        !           265: | Software IEC/IEEE extended double-precision conversion routines.
        !           266: *----------------------------------------------------------------------------*/
        !           267: tme_int32_t floatx80_to_int32 _TME_P(( floatx80 ));
        !           268: tme_int32_t floatx80_to_int32_round_to_zero _TME_P(( floatx80 ));
        !           269: #ifdef TME_HAVE_INT64_T
        !           270: tme_int64_t floatx80_to_int64 _TME_P(( floatx80 ));
        !           271: tme_int64_t floatx80_to_int64_round_to_zero _TME_P(( floatx80 ));
        !           272: #endif /* TME_HAVE_INT64_T */
        !           273: float32 floatx80_to_float32 _TME_P(( floatx80 ));
        !           274: float64 floatx80_to_float64 _TME_P(( floatx80 ));
        !           275: #ifdef FLOAT128
        !           276: float128 floatx80_to_float128 _TME_P(( floatx80 ));
        !           277: #endif /* FLOAT128 */
        !           278: 
        !           279: /*----------------------------------------------------------------------------
        !           280: | Software IEC/IEEE extended double-precision operations.
        !           281: *----------------------------------------------------------------------------*/
        !           282: floatx80 floatx80_round_to_int _TME_P(( floatx80 ));
        !           283: floatx80 floatx80_add _TME_P(( floatx80, floatx80 ));
        !           284: floatx80 floatx80_sub _TME_P(( floatx80, floatx80 ));
        !           285: floatx80 floatx80_mul _TME_P(( floatx80, floatx80 ));
        !           286: floatx80 floatx80_div _TME_P(( floatx80, floatx80 ));
        !           287: floatx80 floatx80_rem _TME_P(( floatx80, floatx80 ));
        !           288: floatx80 floatx80_sqrt _TME_P(( floatx80 ));
        !           289: flag floatx80_eq _TME_P(( floatx80, floatx80 ));
        !           290: flag floatx80_le _TME_P(( floatx80, floatx80 ));
        !           291: flag floatx80_lt _TME_P(( floatx80, floatx80 ));
        !           292: flag floatx80_eq_signaling _TME_P(( floatx80, floatx80 ));
        !           293: flag floatx80_le_quiet _TME_P(( floatx80, floatx80 ));
        !           294: flag floatx80_lt_quiet _TME_P(( floatx80, floatx80 ));
        !           295: 
        !           296: #endif /* FLOATX80 */
        !           297: 
        !           298: #ifdef FLOAT128
        !           299: 
        !           300: /*----------------------------------------------------------------------------
        !           301: | Software IEC/IEEE quadruple-precision conversion routines.
        !           302: *----------------------------------------------------------------------------*/
        !           303: tme_int32_t float128_to_int32 _TME_P(( float128 ));
        !           304: tme_int32_t float128_to_int32_round_to_zero _TME_P(( float128 ));
        !           305: tme_int64_t float128_to_int64 _TME_P(( float128 ));
        !           306: tme_int64_t float128_to_int64_round_to_zero _TME_P(( float128 ));
        !           307: float32 float128_to_float32 _TME_P(( float128 ));
        !           308: float64 float128_to_float64 _TME_P(( float128 ));
        !           309: #ifdef FLOATX80
        !           310: floatx80 float128_to_floatx80 _TME_P(( float128 ));
        !           311: #endif
        !           312: 
        !           313: /*----------------------------------------------------------------------------
        !           314: | Software IEC/IEEE quadruple-precision operations.
        !           315: *----------------------------------------------------------------------------*/
        !           316: float128 float128_round_to_int _TME_P(( float128 ));
        !           317: float128 float128_add _TME_P(( float128, float128 ));
        !           318: float128 float128_sub _TME_P(( float128, float128 ));
        !           319: float128 float128_mul _TME_P(( float128, float128 ));
        !           320: float128 float128_div _TME_P(( float128, float128 ));
        !           321: float128 float128_rem _TME_P(( float128, float128 ));
        !           322: float128 float128_sqrt _TME_P(( float128 ));
        !           323: flag float128_eq _TME_P(( float128, float128 ));
        !           324: flag float128_le _TME_P(( float128, float128 ));
        !           325: flag float128_lt _TME_P(( float128, float128 ));
        !           326: flag float128_eq_signaling _TME_P(( float128, float128 ));
        !           327: flag float128_le_quiet _TME_P(( float128, float128 ));
        !           328: flag float128_lt_quiet _TME_P(( float128, float128 ));
        !           329: 
        !           330: #endif /* FLOAT128 */
        !           331: 
        !           332: #endif /* _IC_IEEE754_SOFTFLOAT_TME_H */

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