134 lines
2.8 KiB
C
134 lines
2.8 KiB
C
/*
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* Copyright (c) 2024 Scott Duensing, scott@kangaroopunch.com
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef WITHOUT_MATH
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#ifndef F256LIB_AMALGAMATED_BUILD
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#include "f_math.h"
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#endif
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int16_t mathSignedDivision(int16_t a, int16_t b) {
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byte signA = 0; // Zero indicates positive.
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byte signB = 0;
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int16_t r;
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if (a < 0) {
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signA = 1;
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a = -a;
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}
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if (b < 0) {
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signB = 1;
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b = -b;
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}
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POKEW(DIVU_NUM_L, a);
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POKEW(DIVU_DEN_L, b);
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r = PEEKW(QUOU_LL);
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if (signA + signB == 1) r = -r;
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return r;
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}
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int16_t mathSignedDivisionRemainder(int16_t a, int16_t b, int16_t *remainder) {
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byte signA = 0; // Zero indicates positive.
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byte signB = 0;
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int16_t r;
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if (a < 0) {
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signA = 1;
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a = -a;
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}
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if (b < 0) {
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signB = 1;
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b = -b;
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}
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POKEW(DIVU_NUM_L, a);
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POKEW(DIVU_DEN_L, b);
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r = PEEKW(QUOU_LL);
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*remainder = PEEKW(REMU_HL);
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if (signA + signB == 1) r = -r;
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return r;
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}
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int32_t mathSignedMultiply(int16_t a, int16_t b) {
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byte signA = 0; // Zero indicates positive.
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byte signB = 0;
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int32_t r;
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if (a < 0) {
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signA = 1;
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a = -a;
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}
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if (b < 0) {
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signB = 1;
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b = -b;
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}
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POKEW(MULU_A_L, a);
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POKEW(MULU_B_L, b);
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r = PEEKD(MULU_LL);
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if (signA + signB == 1) r = -r;
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return r;
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}
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uint32_t mathUnsignedAddition(uint32_t a, uint32_t b) {
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POKED(ADD_A_LL, a);
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POKED(ADD_B_LL, b);
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return PEEKD(ADD_R_LL);
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}
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uint16_t mathUnsignedDivision(uint16_t a, uint16_t b) {
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POKEW(DIVU_NUM_L, a);
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POKEW(DIVU_DEN_L, b);
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return PEEKW(QUOU_LL);
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}
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uint16_t mathUnsignedDivisionRemainder(uint16_t a, uint16_t b, uint16_t *remainder) {
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POKEW(DIVU_NUM_L, a);
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POKEW(DIVU_DEN_L, b);
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*remainder = PEEKW(REMU_HL);
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return PEEKW(QUOU_LL);
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}
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uint32_t mathUnsignedMultiply(uint16_t a, uint16_t b) {
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POKEW(MULU_A_L, a);
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POKEW(MULU_B_L, b);
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return PEEKD(MULU_LL);
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}
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#endif
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