7u83/stc_rpncalc
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added facility to debug the stack pointer on P3_4 (LCD LED cathode)

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roughly 139 bytes
functions were chosen by manually traversing pow_decn to the bottom
This commit is contained in:
Mirko Scholz
2020-09-08 23:46:41 +02:00
parent 7593260487
commit 4316f928f8
10 changed files with 167 additions and 16 deletions
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2
src/decn/CMakeLists.txt
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@ -12,7 +12,7 @@ target_compile_options(coverage_config INTERFACE -O0 -g --coverage)
target_link_libraries(coverage_config INTERFACE --coverage)
# decn library
add_library(decn decn.c)
add_library(decn decn.c ../utils.c)
# decn library with coverage
add_library(decn_cover decn.c)

4
src/decn/decn.c
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@ -19,6 +19,7 @@
*/
#include "../utils.h"
#include "../stack_debug.h"
#include "decn.h"
@ -86,6 +87,8 @@ const dec80 DECN_LN_10 = {
void copy_decn(dec80* const dest, const dec80* const src){
uint8_t i;
stack_debug(0x01);
dest->exponent = src->exponent;
//copy nibbles
@ -163,6 +166,7 @@ static void remove_leading_zeros(dec80* x){
uint8_t is_negative = (x->exponent < 0);
exp_t exponent = get_exponent(x);
stack_debug(0x02);
//find first non-zero digit100
for (digit100 = 0; digit100 < DEC80_NUM_LSU; digit100++){
if (x->lsu[digit100] != 0){