| /* Copyright (c) 2002 Michael Stumpf <mistumpf@de.pepperl-fuchs.com> |
| Copyright (c) 2006 Dmitry Xmelkov |
| All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are met: |
| |
| * Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| * Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in |
| the documentation and/or other materials provided with the |
| distribution. |
| * Neither the name of the copyright holders nor the names of |
| contributors may be used to endorse or promote products derived |
| from this software without specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| POSSIBILITY OF SUCH DAMAGE. */ |
| |
| /* $Id: fp_sinus.S 2191 2010-11-05 13:45:57Z arcanum $ */ |
| |
| #if !defined(__AVR_TINY__) |
| |
| #include "fp32def.h" |
| #include "asmdef.h" |
| |
| /* float __fp_sinus (flt40_t A, ZL); |
| */ |
| |
| #define HI40_PIO2 0x3FC90FDA /* high 4 bytes Pi/2 */ |
| #define LO40_PIO2 0xA2 |
| |
| ENTRY __fp_sinus |
| push ZL |
| |
| sbrs ZL, 0 |
| rjmp 1f |
| ldi rBE, LO40_PIO2 |
| ldi rB0, lo8(HI40_PIO2) |
| ldi rB1, hi8(HI40_PIO2) |
| ldi rB2, hlo8(HI40_PIO2) |
| ldi rB3, hhi8(HI40_PIO2 | 0x80000000) |
| rcall _U(__addsf3x) |
| |
| 1: rcall _U(__fp_round) |
| |
| pop r0 |
| inc r0 |
| sbrc r0, 1 |
| subi rA3, 0x80 |
| |
| ldi ZL, lo8(.L_table) |
| ldi ZH, hi8(.L_table) |
| rjmp _U(__fp_powsodd) |
| ENDFUNC |
| |
| PGM_SECTION |
| .L_table: |
| .byte 5 |
| .byte 0xa8,0x4c,0xcd,0xb2 ; -0.0000000239 |
| .byte 0xd4,0x4e,0xb9,0x38,0x36 ; 0.0000027526 |
| .byte 0xa9,0x02,0x0c,0x50,0xb9 ; -0.0001984090 |
| .byte 0x91,0x86,0x88,0x08,0x3c ; 0.0083333315 |
| .byte 0xa6,0xaa,0xaa,0x2a,0xbe ; -0.1666666664 |
| .byte 0x00,0x00,0x00,0x80,0x3f ; 1.0000000000 |
| .end |
| |
| #endif /* !defined(__AVR_TINY__) */ |
