[BASH] Regex for floating point number Post: 302585479

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I have the following code snippet in bash if ]; then minm=`echo "$diff" | bc` fi It works well for most of the cases. However lets say diff is -0.17 and minm is -0.0017. In such a case the comparison seems to fail. Is the correct way to compare a mixture of positive and...

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ccos

CSIN(3) 						   BSD Library Functions Manual 						   CSIN(3)

NAME

     csin -- complex sine function
     ccos -- complex cosine function
     ctan -- complex tangent function

SYNOPSIS

     #include <complex.h>

     double complex
     csin(double complex z);

     long double complex
     csinl(long double complex z);

     float complex
     csinf(float complex z);

     double complex
     ccos(double complex z);

     long double complex
     ccosl(long double complex z);

     float complex
     ccosf(float complex z);

     double complex
     ctan(double complex z);

     long double complex
     ctanl(long double complex z);

     float complex
     ctanf(float complex z);

DESCRIPTION

     csin(z) computes the sine of the complex floating-point number z.

     ccos(z) computes the cosine of the complex floating-point number z.

     ctan(z) computes the tangent of the complex floating-point number z.

NOTES

     csin, ccos, and ctan are defined in terms of the complex hyperbolic functions as follows:

	   csin(z) = -i * csinh(i*z),
	   ccos(z) = ccosh(i*z),
	   ctan(z) = -i * ctanh(i*z).

SEE ALSO

     csinh(3) ccosh(3) ctanh(3) complex(3)

STANDARDS

     The csin(), ccos(), and ctan() functions conform to ISO/IEC 9899:2011.

4th Berkeley Distribution					 December 11, 2006					 4th Berkeley Distribution

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