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akshay...@gmail.com
,
Petteri Aimonen
3
4/16/19
Magic numbers in atan2
To answer my own question, here is the equation used for atan2: https://dspguru.com/dsp/tricks/fixed-
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Magic numbers in atan2
To answer my own question, here is the equation used for atan2: https://dspguru.com/dsp/tricks/fixed-
4/16/19
Karl Edler
2
12/2/15
build/release_xc16v1_25/production/src/fix16.o(.text+0x43a): In function `.LSM71': : undefined reference to `___clzsi2'
Got it. Although the Microchip compiler defines the symbol __GNUC__ it does not define the function
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build/release_xc16v1_25/production/src/fix16.o(.text+0x43a): In function `.LSM71': : undefined reference to `___clzsi2'
Got it. Although the Microchip compiler defines the symbol __GNUC__ it does not define the function
12/2/15
Jim Keener
,
Petteri Aimonen
2
10/21/15
Issue Migration
Hi, > Should the issues in Google Code be migrated to > https://github.com/PetteriAimonen/
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Issue Migration
Hi, > Should the issues in Google Code be migrated to > https://github.com/PetteriAimonen/
10/21/15
Demetris Tziambazis
,
Petteri Aimonen
2
3/16/15
Huge compiled size of the library
Hi, > Program Size: Code=15100 RO-data=3696 RW-data=6016 ZI-data=4672 Below is what I get with GCC
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Huge compiled size of the library
Hi, > Program Size: Code=15100 RO-data=3696 RW-data=6016 ZI-data=4672 Below is what I get with GCC
3/16/15
Demetris Tziambazis
,
Petteri Aimonen
8
3/2/15
Overflow flag
What is error number 9? MATRIX ERRORS: 9 0.0000 1.3990 -2.3174 0.0000 0.2870 -0.9234 0.0000 7.7266
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Overflow flag
What is error number 9? MATRIX ERRORS: 9 0.0000 1.3990 -2.3174 0.0000 0.2870 -0.9234 0.0000 7.7266
3/2/15
Demetris Tziambazis
,
Petteri Aimonen
5
2/28/15
Eigenvalues Eigenvectors
OK again, UPDATE!! in this code: https://copy.com/NevqSaZA4VH8vYjA when you build it and run it (with
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Eigenvalues Eigenvectors
OK again, UPDATE!! in this code: https://copy.com/NevqSaZA4VH8vYjA when you build it and run it (with
2/28/15
Logan Streondj
, …
Vincent
4
2/26/15
Superior Highly Composite Numbers for fractional representation
Hi, For me, the goal of libfixmath is to provide fast fixed point math operations. Your
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Superior Highly Composite Numbers for fractional representation
Hi, For me, the goal of libfixmath is to provide fast fixed point math operations. Your
2/26/15
libfi...@googlecode.com
19
2/19/15
Issue 9 in libfixmath: 32 bit div
Comment #18 on issue 9 by sbmeirow: 32 bit div https://code.google.com/p/libfixmath/issues/detail?id=
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Issue 9 in libfixmath: 32 bit div
Comment #18 on issue 9 by sbmeirow: 32 bit div https://code.google.com/p/libfixmath/issues/detail?id=
2/19/15
Jonas Zeiger
,
Petteri Aimonen
3
12/30/14
Compile time initialization of fix16_t values without floating-point support
Hi, Found one small problem: values like F16C(-0,1) became positive instead, as the leading sign of 0
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Compile time initialization of fix16_t values without floating-point support
Hi, Found one small problem: values like F16C(-0,1) became positive instead, as the leading sign of 0
12/30/14
libfi...@googlecode.com
2
9/28/14
Comment on Fix16Limits in libfixmath
Comment by seatond...@gmail.com: I couldn't agree more. I recently had occasion to convert some
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Comment on Fix16Limits in libfixmath
Comment by seatond...@gmail.com: I couldn't agree more. I recently had occasion to convert some
9/28/14
libfi...@googlecode.com
8/11/14
Issue 31 in libfixmath: lerp overflows
Status: New Owner: ---- Labels: Type-Defect Priority-Medium New issue 31 by rmidt...@gmail.com: lerp
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Issue 31 in libfixmath: lerp overflows
Status: New Owner: ---- Labels: Type-Defect Priority-Medium New issue 31 by rmidt...@gmail.com: lerp
8/11/14
Petteri Aimonen
,
Ben Brewer
2
8/7/14
Another fixed point math library
Hey, Looks like that library is actually younger than ours, so they're the ones clashing really.
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Another fixed point math library
Hey, Looks like that library is actually younger than ours, so they're the ones clashing really.
8/7/14
libfi...@googlecode.com
7/30/14
Issue 30 in libfixmath: Fix16(const fix16_t inValue) should be removed
Status: New Owner: ---- Labels: Type-Defect Priority-Medium New issue 30 by yaron.ke...@gmail.com:
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Issue 30 in libfixmath: Fix16(const fix16_t inValue) should be removed
Status: New Owner: ---- Labels: Type-Defect Priority-Medium New issue 30 by yaron.ke...@gmail.com:
7/30/14
libfi...@googlecode.com
2
5/28/14
Comment on Trig_Math in libfixmath
Comment by googl.us...@gmail.com: I get better results for sine and cosine, by only calculating the
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Comment on Trig_Math in libfixmath
Comment by googl.us...@gmail.com: I get better results for sine and cosine, by only calculating the
5/28/14
grz...@gmail.com
,
Ben Brewer
3
5/7/14
How this can be implemented?
First thing I don't get is why this is different, you should try to do the same with libfixmath
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How this can be implemented?
First thing I don't get is why this is different, you should try to do the same with libfixmath
5/7/14
libfi...@googlecode.com
4
4/15/14
Issue 29 in libfixmath: 32-bit multiplication seems to be way off for some values
Updates: Status: Invalid Comment #3 on issue 29 by Petteri.Aimonen: 32-bit multiplication seems to be
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Issue 29 in libfixmath: 32-bit multiplication seems to be way off for some values
Updates: Status: Invalid Comment #3 on issue 29 by Petteri.Aimonen: 32-bit multiplication seems to be
4/15/14
libfi...@googlecode.com
6
2/4/14
Issue 22 in libfixmath: atan2 incorrect
Comment #5 on issue 22 by avrbegin...@googlemail.com: atan2 incorrect http://code.google.com/p/
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Issue 22 in libfixmath: atan2 incorrect
Comment #5 on issue 22 by avrbegin...@googlemail.com: atan2 incorrect http://code.google.com/p/
2/4/14
libfi...@googlecode.com
2
1/16/14
Issue 28 in libfixmath: Unary minus on unsigned type
Updates: Status: Fixed Comment #1 on issue 28 by Petteri.Aimonen: Unary minus on unsigned type http:/
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Issue 28 in libfixmath: Unary minus on unsigned type
Updates: Status: Fixed Comment #1 on issue 28 by Petteri.Aimonen: Unary minus on unsigned type http:/
1/16/14
Adam Stambler
1/11/14
Alternate Sine Implementation Missing
Hi All, On the wiki page for trig functions, there is a description of an alternate sine function
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Alternate Sine Implementation Missing
Hi All, On the wiki page for trig functions, there is a description of an alternate sine function
1/11/14
Oleg Vazhnev
, …
Ben Brewer
7
1/11/14
If numbers more than 65536 are supported? what is performance?
Hey Oleg, The best way to get performance out of fixed point is to do it all manually, this library
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If numbers more than 65536 are supported? what is performance?
Hey Oleg, The best way to get performance out of fixed point is to do it all manually, this library
1/11/14
libfi...@googlecode.com
12/18/13
Issue 27 in libfixmath: Probably error in log2 functions test for skipping decimal part
Status: New Owner: ---- Labels: Type-Defect Priority-Medium New issue 27 by raphen...@gmail.com:
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Issue 27 in libfixmath: Probably error in log2 functions test for skipping decimal part
Status: New Owner: ---- Labels: Type-Defect Priority-Medium New issue 27 by raphen...@gmail.com:
12/18/13
libfi...@googlecode.com
5
12/8/13
Issue 26 in libfixmath: fix16_div bug due to __builtin_clzl
Updates: Status: Done Cc: Flat...@googlemail.com Comment #4 on issue 26 by Petteri.Aimonen:
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Issue 26 in libfixmath: fix16_div bug due to __builtin_clzl
Updates: Status: Done Cc: Flat...@googlemail.com Comment #4 on issue 26 by Petteri.Aimonen:
12/8/13
libfi...@googlecode.com
3
9/8/13
Issue 25 in libfixmath: libfixmath for cortex m0
Comment #2 on issue 25 by Flat...@googlemail.com: libfixmath for cortex m0 http://code.google.com/p/
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Issue 25 in libfixmath: libfixmath for cortex m0
Comment #2 on issue 25 by Flat...@googlemail.com: libfixmath for cortex m0 http://code.google.com/p/
9/8/13
dspo...@gmail.com
7/31/13
tutorial
Hi, Is there any tutorial with step by step instruction for this fixed point library? Like for
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tutorial
Hi, Is there any tutorial with step by step instruction for this fixed point library? Like for
7/31/13
libfi...@googlecode.com
2
4/20/13
Issue 24 in libfixmath: FIXMATH_FAST_SIN gives rounding error
Comment #1 on issue 24 by bynun...@gmail.com: FIXMATH_FAST_SIN gives rounding error http://code.
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Issue 24 in libfixmath: FIXMATH_FAST_SIN gives rounding error
Comment #1 on issue 24 by bynun...@gmail.com: FIXMATH_FAST_SIN gives rounding error http://code.
4/20/13
libfi...@googlecode.com
2
4/19/13
Issue 23 in libfixmath: fix16_str_unittests fails (MSYS/windows)
Updates: Status: Fixed Comment #1 on issue 23 by Petteri.Aimonen: fix16_str_unittests fails (MSYS/
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Issue 23 in libfixmath: fix16_str_unittests fails (MSYS/windows)
Updates: Status: Fixed Comment #1 on issue 23 by Petteri.Aimonen: fix16_str_unittests fails (MSYS/
4/19/13
Abhishek Ballaney
,
Ben Brewer
4
4/9/13
Input queries
Hey Abhishek, Your problem is that you assume that your compiler will automatically cast ints and
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Input queries
Hey Abhishek, Your problem is that you assume that your compiler will automatically cast ints and
4/9/13
libfi...@googlecode.com
3
1/28/13
Issue 19 in libfixmath: compiler error after setting #define FIXMATH_NO_OVERFLOW
Updates: Status: Fixed Comment #2 on issue 19 by Petteri.Aimonen: compiler error after setting #
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Issue 19 in libfixmath: compiler error after setting #define FIXMATH_NO_OVERFLOW
Updates: Status: Fixed Comment #2 on issue 19 by Petteri.Aimonen: compiler error after setting #
1/28/13
libfi...@googlecode.com
2
1/28/13
Issue 20 in libfixmath: left shift count >= width of type
Updates: Status: Fixed Comment #1 on issue 20 by Petteri.Aimonen: left shift count >= width of
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Issue 20 in libfixmath: left shift count >= width of type
Updates: Status: Fixed Comment #1 on issue 20 by Petteri.Aimonen: left shift count >= width of
1/28/13
libfi...@googlecode.com
2
1/28/13
Issue 21 in libfixmath: >= 0 comparison might be more efficient than > 0 comparison
Updates: Status: Fixed Comment #1 on issue 21 by Petteri.Aimonen: >= 0 comparison might be more
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Issue 21 in libfixmath: >= 0 comparison might be more efficient than > 0 comparison
Updates: Status: Fixed Comment #1 on issue 21 by Petteri.Aimonen: >= 0 comparison might be more
1/28/13