1 /****************************************************************************** 2 Copyright (c) 2007-2011, Intel Corp. 3 All rights reserved. 4 5 Redistribution and use in source and binary forms, with or without 6 modification, are permitted provided that the following conditions are met: 7 8 * Redistributions of source code must retain the above copyright notice, 9 this list of conditions and the following disclaimer. 10 * Redistributions in binary form must reproduce the above copyright 11 notice, this list of conditions and the following disclaimer in the 12 documentation and/or other materials provided with the distribution. 13 * Neither the name of Intel Corporation nor the names of its contributors 14 may be used to endorse or promote products derived from this software 15 without specific prior written permission. 16 17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 21 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 THE POSSIBILITY OF SUCH DAMAGE. 28 ******************************************************************************/ 29 30 31 #include "bid_trans.h" 32 33 BID_TYPE_FUNCTION_ARG2(BID_UINT64, bid64_atan2, x, y) 34 BID_UINT64 sign_x, sign_y, coefficient_x, coefficient_y; 35 BID_UINT64 valid_x, valid_y, res; 36 BID_F80_TYPE xd, yd, zd; 37 int exponent_x, exponent_y; 38 39 valid_x = unpack_BID64 (&sign_x, &exponent_x, &coefficient_x, x); 40 valid_y = unpack_BID64 (&sign_y, &exponent_y, &coefficient_y, y); 41 42 if (!valid_x) { 43 // x is Inf. or NaN 44 #ifdef BID_SET_STATUS_FLAGS 45 if ((y & SNAN_MASK64) == SNAN_MASK64) // y is sNaN 46 __set_status_flags (pfpsf, BID_INVALID_EXCEPTION); 47 #endif 48 49 // test if x is NaN 50 if ((x & NAN_MASK64) == NAN_MASK64) { 51 #ifdef BID_SET_STATUS_FLAGS 52 if ((x & SNAN_MASK64) == SNAN_MASK64) // sNaN 53 __set_status_flags (pfpsf, BID_INVALID_EXCEPTION); 54 #endif 55 BID_RETURN (coefficient_x & QUIET_MASK64); 56 } 57 } 58 59 if (!valid_y) { 60 // y is Inf. or NaN 61 62 // test if y is NaN 63 if ((y & NAN_MASK64) == NAN_MASK64) { 64 #ifdef BID_SET_STATUS_FLAGS 65 if ((y & SNAN_MASK64) == SNAN_MASK64) // sNaN 66 __set_status_flags (pfpsf, BID_INVALID_EXCEPTION); 67 #endif 68 BID_RETURN (coefficient_y & QUIET_MASK64); 69 } 70 } 71 72 BIDECIMAL_CALL1(bid64_to_binary80,xd,x); 73 BIDECIMAL_CALL1(bid64_to_binary80,yd,y); 74 __bid_f80_atan2(zd, xd, yd); 75 BIDECIMAL_CALL1(binary80_to_bid64,res,zd); 76 BID_RETURN (res); 77 } 78 79 80