github.com/afumu/libc@v0.0.6/musl/src/math/significandf.c (about)

     1  #define _GNU_SOURCE
     2  #include <math.h>
     3  
     4  float significandf(float x)
     5  {
     6  	return scalbnf(x, -ilogbf(x));
     7  }