round function in jq doesn't work. $ jq '10.01 | round' jq: error: round/0 is not defined at <top-level>, line 1: 10.01 | round jq: 1 compile error $ jq --help jq - commandline JSON proces...

I already know how to build the new version of Glibc (e.g. 2.3) beside the older version (e.g. 2.19). I followed the instructions in https://www.tldp.org/HOWTO/html_single/Glibc-Install-HOWTO/ Bu...

With some compilers, using pow and certain other functions in a C program requires linking to the m library. However, some compilers don't require this and would error out on linking to the m libra...

As far as I know some math functions are contained in libc, while others are in libm. I've discovered that experimentally: $ nm --dynamic --defined-only /lib/x86_64-linux-gnu/libm.so.6 | grep -w a...

Sample code for fmod: #include <stdio.h> #include <math.h> int main(void) { double x = 0.14527, y = 3.14159; printf("fmod(x, y) = %.6lf\n", fmod(x, y)); return 0; } Compili...

I am having trouble compiling code intended for 32bit unix system on my 64bit Ubuntu, Linux. Does anyone have any ideas what may be the problem? gcc main.o test.o render.o transform.o model.o vect...

The GCC implementation of the C mathematical library on Debian systems has apparently an (IEEE 754-2008)-compliant implementation of the function exp, implying that rounding shall always be correct...

I'm very new to C and I have this code: #include <stdio.h> #include <math.h> int main(void) { double x = 0.5; double result = sqrt(x); printf("The square root of %lf is %lf\n...

Is it a standard to have only dynamic libraries mostly without their static version? I am particularly asking about math library. In my fedora 17 (linux machine on Intel 32 processor), I have lates...

I have native source code written in C that I would like to run on my Android device (Nexus 7). I already successfully did lots of research and online tutorials on running native code on Android us...

As per Wikipedia there are many variants of standard C library based on operating system and compilers. Ref: http://en.wikipedia.org/wiki/C_standard_library But I want to understand that how ple...

#include <math.h> #include <stdio.h> int main() { printf("%f", roundf(3.14)); } I compile above code (hasn't use -lm), add use ldd a.out, the result is linux-vdso.so.1 => (0x000...

I want to download and compile the source code for libm (GNU's may library). Can someone point me to the correct location / repository?

I have a problem during try to compile sources with recent android-9 x86 platform. Primary question: why static library libm.a and dynamic libm.so are different? Problem is i've try to compile: ...