gitee.com/quant1x/num@v0.3.2/math32/signbit.go (about)

     1  package math32
     2  
     3  // Signbit returns true if x is negative or negative zero.
     4  func Signbit(x float32) bool {
     5  	return Float32bits(x)&(1<<31) != 0
     6  }