printing float/double using printf crashes the program

I am working on a syscall implementation for a PowerPc. I have tested some gcc functions and they all seem to work (e.g. sqrt sin cos pow printf malloc...)

undefined reference to "only some math.h" functions

I am having a strange problem. The math libraries has been added to my makefile. # include standard C library

Looking for C source code for snprintf()

I need to port snprintf() to another platform that does not fully support GLibC. I am looking 开发者_运维问答for the underlying declaration in the Glibc 2.14 source code.I follow many function calls,

newlib sscanf() throw hardfault exception in stm32

i use gcc compile my project, use the function sscanf() in main, the stack size is 4k, i debug the program in gdb, show VPUSH instruction throw the exception.

Porting NewLib for my OS: some questions

I am trying to port NewLib for my OS (I am following this tutorial:http://wiki.osdev.org/Porting_Newlib), and I have some questions.

How to get a call stack backtrace? (deeply embedded, no library support)

I want my exception handlers and debug functions to be able to print call stack backtraces, basically just like the backtrace() library function in glibc. Unfortunately, my C library (Newlib) doesn\'t

Porting NewLib: crt0

I am porting NewLib for my own OS by following a tutorial. It says开发者_如何学Python that once I finished my crt0, I have to \"link it as the first object\". How can I do that?

(Android) How to catch a "ring" event?

I\'m clearly a newb, and I was wondering if anyone knows how I can detect a \"ring\" event on my cellphone through the android sdk?Gen开发者_如何学Pythonerally I want to do something with the phone wh

左摇右摆他也来是什么歌？

ZMapp抗体疗法抵御埃博拉病毒的效果如何？？

微生丸 2022-05-13 07:04 两名美国人接受名为ZMapp的实验性抗体混合剂后，其感染症状得到了明显的控制和缓解。研究者Erica Ollmann Saphire教授利用电子显微镜和X射线晶体学技术对这些抗体的结构进行分析，依靠