readme update
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README.md
105
README.md
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@ -1,13 +1,12 @@
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# Langatator
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A very basic interpreted programming language.
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A very basic interpreted imperative programming language.
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## Background
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The goal of this project is to create a simple implementation of a BASIC-like language just to learn a few things along the way and practice my C programming skills.
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No need to do complex things, just to create a simple interpreted language that can be used to do some arithmetics
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and create for example a number guessing game.
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No need to do complex things, just to create a simple interpreted language that can be used to do some arithmetics and create for example a number guessing game.
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I didn't really study how others languages works beforehand, I'm just guessing how I'm implementing things so that I can make mistakes to learn from.
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@ -27,28 +26,34 @@ ToDo List:
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- [X] allow to set variables
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- [X] read line comments
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- [X] add modulus operator '%'
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- [ ] add support for multiple characters operators
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- [ ] add inclusive operators like '!=', '>=', '<='
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- [ ] add support for priority operators
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- [X] add input_number() std function
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- [X] add NULL type (dirty way to handle no returns and some errors)
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- [X] add type() std function and others type checking functions
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- [X] add ceil() and floor() std functions
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- [X] base of the CLI
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- [ ] evaluate expression from stdin
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- [X] read a file
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- [X] if statements
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- [X] while statements (with break and continue)
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- [ ] repeat statement
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- [ ] add multiple characters operators
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- [ ] add inclusive operators like '!=', '>=', '<='
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- [ ] add functions support
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- [ ] add config header file
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- [ ] ability to modify keywords and customize the lang
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- [ ] add priority operators
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- [ ] add multiline expressions
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- [ ] add short hand if without 'end'
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- [ ] add repeat statement
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- [ ] add static string support (just for ui)
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- [ ] add print_string function
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- [ ] add basic number list support
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- [ ] add fully features strings support
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- [ ] evaluate expression from stdin
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- [ ] add config header file
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- [ ] ability to modify keywords and customize the lang
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- [ ] add [classic problem solving](https://rosettacode.org) with code examples
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- [ ] add Web Assembly support and publish a demo website
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- [ ] refactor: use malloc for list
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- [ ] refactor: remove inconsistency on how functions returns error codes
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@ -61,6 +66,9 @@ You will need to compile the code from source.
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I use GNU Make with GCC, but I'm sure you can use any C compilers though you may need to edit some part of the code to cope with other compilers (eg. binary constants).
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## Unit testing
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I try to have some sort of code coverage, you can run the unit tests by issuing `make test`
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## The language
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@ -157,80 +165,3 @@ print_string(str)
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print_newline()
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print_ascii(nb)
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```
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# Evaluator (draft)
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EDIT: that's not actually quite how I implemented the evaluator.
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Map
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componentList:
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bytes steam
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first byte is a uint8 representing the type of the component
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then depending on the type of the component there is 0 or N bytes
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components types:
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- name: integer
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size: 4 bytes (for int)
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- name: open parenthesis
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size: 0 bytes
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- name: close parenthesis
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size: 0 bytes
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- name: float
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size: 32 bytes (IEEE 754)
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- name: operator
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size: 1 byte (255 operators are possible)
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- name: function designator
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desc: id of a function
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size: 2 bytes (65536 functions are possibles)
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Example map of `9+(5*(8+6))`
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lexed stream
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-TYPE:NUMERAL
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VALUE:9
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-TYPE:OPERATOR
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VALUE:PLUS
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-TYPE:OPEN_PARENTHESIS
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VALUE:NULL
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-TYPE:NUMERAL
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VALUE:5
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-TYPE:OPERATOR
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VALUE:TIMES
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-TYPE:OPEN_PARENTHESIS
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VALUE:NULL
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-TYPE:NUMERAL
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VALUE:8
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-TYPE:OPERATOR
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VALUE:PLUS
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-TYPE:NUMERAL
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VALUE:6
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-TYPE:CLOSE_P
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VALUE:NULL
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-TYPE:CLOSE_P
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VALUE:NULL
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scan the whole lexed stream
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So there will be a kind of time line with reference, a list of reference
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in the begining we allocate two lists, one for the component type, one for the component values
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## Dynamics lists
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we allocate N bytes (uint_8 list[2048])
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methods:
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list_length()
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list_assign_int(int index, int value)
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list_assign_float(int index, float value)
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list_assign_uint_8(int index, uint_8 value)
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list_get_int(int index)
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etc...
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77
draft.md
Normal file
77
draft.md
Normal file
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@ -0,0 +1,77 @@
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# Evaluator (draft)
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EDIT: that's not actually quite how I implemented the evaluator.
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Map
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componentList:
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bytes steam
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first byte is a uint8 representing the type of the component
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then depending on the type of the component there is 0 or N bytes
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components types:
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- name: integer
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size: 4 bytes (for int)
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- name: open parenthesis
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size: 0 bytes
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- name: close parenthesis
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size: 0 bytes
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- name: float
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size: 32 bytes (IEEE 754)
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- name: operator
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size: 1 byte (255 operators are possible)
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- name: function designator
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desc: id of a function
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size: 2 bytes (65536 functions are possibles)
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Example map of `9+(5*(8+6))`
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lexed stream
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-TYPE:NUMERAL
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VALUE:9
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-TYPE:OPERATOR
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VALUE:PLUS
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-TYPE:OPEN_PARENTHESIS
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VALUE:NULL
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-TYPE:NUMERAL
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VALUE:5
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-TYPE:OPERATOR
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VALUE:TIMES
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-TYPE:OPEN_PARENTHESIS
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VALUE:NULL
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-TYPE:NUMERAL
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VALUE:8
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-TYPE:OPERATOR
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VALUE:PLUS
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-TYPE:NUMERAL
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VALUE:6
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-TYPE:CLOSE_P
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VALUE:NULL
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-TYPE:CLOSE_P
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VALUE:NULL
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scan the whole lexed stream
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So there will be a kind of time line with reference, a list of reference
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in the begining we allocate two lists, one for the component type, one for the component values
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## Dynamics lists
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we allocate N bytes (uint_8 list[2048])
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methods:
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list_length()
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list_assign_int(int index, int value)
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list_assign_float(int index, float value)
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list_assign_uint_8(int index, uint_8 value)
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list_get_int(int index)
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etc...
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304
log.err
304
log.err
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@ -1,304 +0,0 @@
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./src/funcs.c:43:33: error: '#' is not followed by a macro parameter
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43 | #define SIMPLE_FUNC_BINDING(name) ({\
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| ^
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./src/funcs.c:51:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
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51 | SIMPLE_FUNC_BINDING(sqrt)
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| ^~~~~~~~~~~~~~~~~~~
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./src/funcs.c: In function ‘SIMPLE_FUNC_BINDING’:
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./src/funcs.c:53:1: error: expected declaration specifiers before ‘SIMPLE_FUNC_BINDING’
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53 | SIMPLE_FUNC_BINDING(exp)
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| ^~~~~~~~~~~~~~~~~~~
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./src/funcs.c:114:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
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114 | {
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| ^
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./src/funcs.c:121:1: warning: empty declaration
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121 | struct FuncIntro {
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| ^~~~~~
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./src/funcs.c:129:8: error: parameter ‘intros’ is initialized
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129 | struct FuncIntro intros[] = {
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| ^~~~~~~~~
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./src/funcs.c:130:5: warning: braces around scalar initializer
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130 | {"abs", &abs_impl, 1},
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| ^
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./src/funcs.c:130:5: note: (near initialization for ‘intros’)
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./src/funcs.c:130:6: warning: initialization of ‘struct FuncIntro *’ from incompatible pointer type ‘char *’ [-Wincompatible-pointer-types]
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130 | {"abs", &abs_impl, 1},
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| ^~~~~
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./src/funcs.c:130:6: note: (near initialization for ‘intros’)
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./src/funcs.c:130:13: warning: excess elements in scalar initializer
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130 | {"abs", &abs_impl, 1},
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| ^
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./src/funcs.c:130:13: note: (near initialization for ‘intros’)
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./src/funcs.c:130:24: warning: excess elements in scalar initializer
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130 | {"abs", &abs_impl, 1},
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| ^
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./src/funcs.c:130:24: note: (near initialization for ‘intros’)
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./src/funcs.c:132:5: warning: braces around scalar initializer
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132 | {"sqrt", &sqrt_impl, 1},
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| ^
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./src/funcs.c:132:5: note: (near initialization for ‘intros’)
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./src/funcs.c:132:6: warning: initialization of ‘struct FuncIntro *’ from incompatible pointer type ‘char *’ [-Wincompatible-pointer-types]
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132 | {"sqrt", &sqrt_impl, 1},
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| ^~~~~~
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./src/funcs.c:132:6: note: (near initialization for ‘intros’)
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./src/funcs.c:132:15: error: ‘sqrt_impl’ undeclared (first use in this function)
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132 | {"sqrt", &sqrt_impl, 1},
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| ^~~~~~~~~
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./src/funcs.c:132:15: note: each undeclared identifier is reported only once for each function it appears in
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./src/funcs.c:132:14: warning: excess elements in scalar initializer
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132 | {"sqrt", &sqrt_impl, 1},
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| ^
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./src/funcs.c:132:14: note: (near initialization for ‘intros’)
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./src/funcs.c:132:26: warning: excess elements in scalar initializer
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132 | {"sqrt", &sqrt_impl, 1},
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| ^
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./src/funcs.c:132:26: note: (near initialization for ‘intros’)
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./src/funcs.c:132:5: warning: excess elements in scalar initializer
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132 | {"sqrt", &sqrt_impl, 1},
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| ^
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./src/funcs.c:132:5: note: (near initialization for ‘intros’)
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./src/funcs.c:133:5: warning: braces around scalar initializer
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133 | {"exp", &exp_impl, 1},
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| ^
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./src/funcs.c:133:5: note: (near initialization for ‘intros’)
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./src/funcs.c:133:6: warning: initialization of ‘struct FuncIntro *’ from incompatible pointer type ‘char *’ [-Wincompatible-pointer-types]
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133 | {"exp", &exp_impl, 1},
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| ^~~~~
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./src/funcs.c:133:6: note: (near initialization for ‘intros’)
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./src/funcs.c:133:14: error: ‘exp_impl’ undeclared (first use in this function)
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133 | {"exp", &exp_impl, 1},
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| ^~~~~~~~
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./src/funcs.c:133:13: warning: excess elements in scalar initializer
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133 | {"exp", &exp_impl, 1},
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| ^
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./src/funcs.c:133:13: note: (near initialization for ‘intros’)
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./src/funcs.c:133:24: warning: excess elements in scalar initializer
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133 | {"exp", &exp_impl, 1},
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| ^
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./src/funcs.c:133:24: note: (near initialization for ‘intros’)
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./src/funcs.c:133:5: warning: excess elements in scalar initializer
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133 | {"exp", &exp_impl, 1},
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| ^
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./src/funcs.c:133:5: note: (near initialization for ‘intros’)
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./src/funcs.c:135:5: warning: braces around scalar initializer
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135 | {"sin", &sin_impl, 1},
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| ^
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./src/funcs.c:135:5: note: (near initialization for ‘intros’)
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./src/funcs.c:135:6: warning: initialization of ‘struct FuncIntro *’ from incompatible pointer type ‘char *’ [-Wincompatible-pointer-types]
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135 | {"sin", &sin_impl, 1},
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| ^~~~~
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./src/funcs.c:135:6: note: (near initialization for ‘intros’)
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./src/funcs.c:135:14: error: ‘sin_impl’ undeclared (first use in this function)
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135 | {"sin", &sin_impl, 1},
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| ^~~~~~~~
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./src/funcs.c:135:13: warning: excess elements in scalar initializer
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135 | {"sin", &sin_impl, 1},
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| ^
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./src/funcs.c:135:13: note: (near initialization for ‘intros’)
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./src/funcs.c:135:24: warning: excess elements in scalar initializer
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135 | {"sin", &sin_impl, 1},
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| ^
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./src/funcs.c:135:24: note: (near initialization for ‘intros’)
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./src/funcs.c:135:5: warning: excess elements in scalar initializer
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135 | {"sin", &sin_impl, 1},
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| ^
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./src/funcs.c:135:5: note: (near initialization for ‘intros’)
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./src/funcs.c:136:5: warning: braces around scalar initializer
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136 | {"cos", &cos_impl, 1},
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| ^
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./src/funcs.c:136:5: note: (near initialization for ‘intros’)
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./src/funcs.c:136:6: warning: initialization of ‘struct FuncIntro *’ from incompatible pointer type ‘char *’ [-Wincompatible-pointer-types]
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136 | {"cos", &cos_impl, 1},
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| ^~~~~
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./src/funcs.c:136:6: note: (near initialization for ‘intros’)
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./src/funcs.c:136:14: error: ‘cos_impl’ undeclared (first use in this function); did you mean ‘abs_impl’?
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136 | {"cos", &cos_impl, 1},
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| ^~~~~~~~
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| abs_impl
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./src/funcs.c:136:13: warning: excess elements in scalar initializer
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136 | {"cos", &cos_impl, 1},
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| ^
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./src/funcs.c:136:13: note: (near initialization for ‘intros’)
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./src/funcs.c:136:24: warning: excess elements in scalar initializer
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136 | {"cos", &cos_impl, 1},
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| ^
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./src/funcs.c:136:24: note: (near initialization for ‘intros’)
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./src/funcs.c:136:5: warning: excess elements in scalar initializer
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136 | {"cos", &cos_impl, 1},
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| ^
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./src/funcs.c:136:5: note: (near initialization for ‘intros’)
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./src/funcs.c:137:5: warning: braces around scalar initializer
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137 | {"tan", &tan_impl, 1},
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| ^
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./src/funcs.c:137:5: note: (near initialization for ‘intros’)
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./src/funcs.c:137:6: warning: initialization of ‘struct FuncIntro *’ from incompatible pointer type ‘char *’ [-Wincompatible-pointer-types]
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137 | {"tan", &tan_impl, 1},
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| ^~~~~
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./src/funcs.c:137:6: note: (near initialization for ‘intros’)
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./src/funcs.c:137:14: error: ‘tan_impl’ undeclared (first use in this function)
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137 | {"tan", &tan_impl, 1},
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| ^~~~~~~~
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./src/funcs.c:137:13: warning: excess elements in scalar initializer
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137 | {"tan", &tan_impl, 1},
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| ^
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./src/funcs.c:137:13: note: (near initialization for ‘intros’)
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./src/funcs.c:137:24: warning: excess elements in scalar initializer
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137 | {"tan", &tan_impl, 1},
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| ^
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./src/funcs.c:137:24: note: (near initialization for ‘intros’)
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./src/funcs.c:137:5: warning: excess elements in scalar initializer
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137 | {"tan", &tan_impl, 1},
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| ^
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./src/funcs.c:137:5: note: (near initialization for ‘intros’)
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./src/funcs.c:138:5: warning: braces around scalar initializer
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138 | {"ln", &ln_impl, 1},
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| ^
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./src/funcs.c:138:5: note: (near initialization for ‘intros’)
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./src/funcs.c:138:6: warning: initialization of ‘struct FuncIntro *’ from incompatible pointer type ‘char *’ [-Wincompatible-pointer-types]
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138 | {"ln", &ln_impl, 1},
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| ^~~~
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./src/funcs.c:138:6: note: (near initialization for ‘intros’)
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./src/funcs.c:138:13: error: ‘ln_impl’ undeclared (first use in this function)
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138 | {"ln", &ln_impl, 1},
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| ^~~~~~~
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./src/funcs.c:138:12: warning: excess elements in scalar initializer
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138 | {"ln", &ln_impl, 1},
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| ^
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./src/funcs.c:138:12: note: (near initialization for ‘intros’)
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./src/funcs.c:138:22: warning: excess elements in scalar initializer
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138 | {"ln", &ln_impl, 1},
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| ^
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./src/funcs.c:138:22: note: (near initialization for ‘intros’)
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./src/funcs.c:138:5: warning: excess elements in scalar initializer
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138 | {"ln", &ln_impl, 1},
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| ^
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./src/funcs.c:138:5: note: (near initialization for ‘intros’)
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./src/funcs.c:139:5: warning: braces around scalar initializer
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139 | {"log", &log_impl, 1},
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| ^
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./src/funcs.c:139:5: note: (near initialization for ‘intros’)
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./src/funcs.c:139:6: warning: initialization of ‘struct FuncIntro *’ from incompatible pointer type ‘char *’ [-Wincompatible-pointer-types]
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139 | {"log", &log_impl, 1},
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| ^~~~~
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./src/funcs.c:139:6: note: (near initialization for ‘intros’)
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./src/funcs.c:139:14: error: ‘log_impl’ undeclared (first use in this function)
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139 | {"log", &log_impl, 1},
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| ^~~~~~~~
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./src/funcs.c:139:13: warning: excess elements in scalar initializer
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139 | {"log", &log_impl, 1},
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| ^
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./src/funcs.c:139:13: note: (near initialization for ‘intros’)
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./src/funcs.c:139:24: warning: excess elements in scalar initializer
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139 | {"log", &log_impl, 1},
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| ^
|
||||
./src/funcs.c:139:24: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:139:5: warning: excess elements in scalar initializer
|
||||
139 | {"log", &log_impl, 1},
|
||||
| ^
|
||||
./src/funcs.c:139:5: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:141:5: warning: braces around scalar initializer
|
||||
141 | {"max", &max_impl, 2},
|
||||
| ^
|
||||
./src/funcs.c:141:5: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:141:6: warning: initialization of ‘struct FuncIntro *’ from incompatible pointer type ‘char *’ [-Wincompatible-pointer-types]
|
||||
141 | {"max", &max_impl, 2},
|
||||
| ^~~~~
|
||||
./src/funcs.c:141:6: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:141:14: error: ‘max_impl’ undeclared (first use in this function)
|
||||
141 | {"max", &max_impl, 2},
|
||||
| ^~~~~~~~
|
||||
./src/funcs.c:141:13: warning: excess elements in scalar initializer
|
||||
141 | {"max", &max_impl, 2},
|
||||
| ^
|
||||
./src/funcs.c:141:13: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:141:24: warning: excess elements in scalar initializer
|
||||
141 | {"max", &max_impl, 2},
|
||||
| ^
|
||||
./src/funcs.c:141:24: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:141:5: warning: excess elements in scalar initializer
|
||||
141 | {"max", &max_impl, 2},
|
||||
| ^
|
||||
./src/funcs.c:141:5: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:142:5: warning: braces around scalar initializer
|
||||
142 | {"get_pi", &get_pi_impl, 0},
|
||||
| ^
|
||||
./src/funcs.c:142:5: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:142:6: warning: initialization of ‘struct FuncIntro *’ from incompatible pointer type ‘char *’ [-Wincompatible-pointer-types]
|
||||
142 | {"get_pi", &get_pi_impl, 0},
|
||||
| ^~~~~~~~
|
||||
./src/funcs.c:142:6: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:142:17: error: ‘get_pi_impl’ undeclared (first use in this function)
|
||||
142 | {"get_pi", &get_pi_impl, 0},
|
||||
| ^~~~~~~~~~~
|
||||
./src/funcs.c:142:16: warning: excess elements in scalar initializer
|
||||
142 | {"get_pi", &get_pi_impl, 0},
|
||||
| ^
|
||||
./src/funcs.c:142:16: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:142:30: warning: excess elements in scalar initializer
|
||||
142 | {"get_pi", &get_pi_impl, 0},
|
||||
| ^
|
||||
./src/funcs.c:142:30: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:142:5: warning: excess elements in scalar initializer
|
||||
142 | {"get_pi", &get_pi_impl, 0},
|
||||
| ^
|
||||
./src/funcs.c:142:5: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:143:5: warning: braces around scalar initializer
|
||||
143 | {"", 0, 0}
|
||||
| ^
|
||||
./src/funcs.c:143:5: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:143:6: warning: initialization of ‘struct FuncIntro *’ from incompatible pointer type ‘char *’ [-Wincompatible-pointer-types]
|
||||
143 | {"", 0, 0}
|
||||
| ^~
|
||||
./src/funcs.c:143:6: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:143:10: warning: excess elements in scalar initializer
|
||||
143 | {"", 0, 0}
|
||||
| ^
|
||||
./src/funcs.c:143:10: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:143:13: warning: excess elements in scalar initializer
|
||||
143 | {"", 0, 0}
|
||||
| ^
|
||||
./src/funcs.c:143:13: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:143:5: warning: excess elements in scalar initializer
|
||||
143 | {"", 0, 0}
|
||||
| ^
|
||||
./src/funcs.c:143:5: note: (near initialization for ‘intros’)
|
||||
./src/funcs.c:146:12: error: storage class specified for parameter ‘nbOfFuncs’
|
||||
146 | static int nbOfFuncs = sizeof(intros)/sizeof(struct FuncIntro);
|
||||
| ^~~~~~~~~
|
||||
./src/funcs.c:146:1: error: parameter ‘nbOfFuncs’ is initialized
|
||||
146 | static int nbOfFuncs = sizeof(intros)/sizeof(struct FuncIntro);
|
||||
| ^~~~~~
|
||||
./src/funcs.c:146:30: warning: ‘sizeof’ on array function parameter ‘intros’ will return size of ‘struct FuncIntro *’ [-Wsizeof-array-argument]
|
||||
146 | static int nbOfFuncs = sizeof(intros)/sizeof(struct FuncIntro);
|
||||
| ^
|
||||
./src/funcs.c:129:18: note: declared here
|
||||
129 | struct FuncIntro intros[] = {
|
||||
| ^~~~~~
|
||||
./src/funcs.c:152:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
|
||||
152 | {
|
||||
| ^
|
||||
./src/funcs.c:162:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
|
||||
162 | {
|
||||
| ^
|
||||
./src/funcs.c:51:1: warning: type of ‘sqrt’ defaults to ‘int’ [-Wimplicit-int]
|
||||
51 | SIMPLE_FUNC_BINDING(sqrt)
|
||||
| ^~~~~~~~~~~~~~~~~~~
|
||||
./src/funcs.c:146:12: error: declaration for parameter ‘nbOfFuncs’ but no such parameter
|
||||
146 | static int nbOfFuncs = sizeof(intros)/sizeof(struct FuncIntro);
|
||||
| ^~~~~~~~~
|
||||
./src/funcs.c:129:18: error: declaration for parameter ‘intros’ but no such parameter
|
||||
129 | struct FuncIntro intros[] = {
|
||||
| ^~~~~~
|
||||
./src/funcs.c:196: error: expected ‘{’ at end of input
|
||||
./src/funcs.c:51:1: warning: unused parameter ‘sqrt’ [-Wunused-parameter]
|
||||
51 | SIMPLE_FUNC_BINDING(sqrt)
|
||||
| ^~~~~~~~~~~~~~~~~~~
|
||||
./src/funcs.c:146:12: warning: unused parameter ‘nbOfFuncs’ [-Wunused-parameter]
|
||||
146 | static int nbOfFuncs = sizeof(intros)/sizeof(struct FuncIntro);
|
||||
| ^~~~~~~~~
|
||||
./src/funcs.c:196: warning: control reaches end of non-void function [-Wreturn-type]
|
||||
./src/number_parsing.c: In function ‘parse_clean_positive_integer’:
|
||||
./src/number_parsing.c:21:29: warning: binary constants are a C2X feature or GCC extension
|
||||
21 | (numeralIndex & 0b001111)
|
||||
| ^~~~~~~~
|
||||
make: *** [Makefile:11: test] Error 1
|
||||
Loading…
Reference in a new issue