adding float numbers Post: 71376

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LEARN ABOUT OSF1

clog

complex(3)						     Library Functions Manual							complex(3)

NAME

       csin, ccos, cdiv, cexp, clog, cmul, cpow, csqrt - Complex functions

LIBRARY

       Math Library (libm.a)

SYNOPSIS

       #include <math.h>

       double_complex  csin (double  x,  double  y);  float_complex   csinf	(float	 x,  float   y); double_complex ccos (double x, double y);
       float_complex  ccosf  (float  x, float  y); double_complex cdiv (double a, double b, double c, double d);  float_complex   cdivf     (float
       a,  float   b, float  c, float  d); double_complex cexp (double x, double y); float_complex  cexpf     (float  x, float	y); double_complex
       clog (double x, double y); float_complex  clogf	   (float  x, float  y); double_complex cmul (double a, double b,  double  c,  double  d);
       float_complex  cmulf  (float  a, float  b, float  c, float  d); double_complex cpow (double a, double b, double c, double d); float_complex
       cpowf	 (float  a, float  b, float  c, float  d); double_complex csqrt     (double x,	double	y);  float_complex  csqrtf     (float	x,
       float  y);

DESCRIPTION

       These functions can only be called from languages that support the double_complex and float_complex data types.

       csin() and csinf() compute the sine of a complex number.

       ccos() and ccosf() return the cosine of a complex number.

       cdiv() and cdivf() return the quotient of two complex numbers: (a+ib)/(c+id).

       cexp() and cexpf() return the exponential of a complex number.

       clog() and clogf() return the natural logarithm of a complex number.

       cmul() and cmulf() return the product of two complex numbers.  cmul(a,b,c,d) is equivalent to (a + ib) * (c + id).

       cpow() and cpowf() raise a complex base (a + ib) to a complex exponent (c + id). cpow(a,b,c,d) is equivalent to e**((c + id) ln(a + ib)).

       csqrt() and csqrtf() compute the square root of a complex number, x + iy. The real part of csqrt is greater than or equal to zero.

       ---------------------------------------------------------------------------
       Function 	 Exceptional Argument			 Routine Behavior
       ---------------------------------------------------------------------------
       csin(), csinf()	 |y| = infinity 			 invalid argument
       csin(), csinf()	 (sinh x sin y) > max_float		 overflow
       csin(), csinf()	 (cosh x cos y) > max_float		 overflow
       ccos(), ccosf()	 |y| = infinity 			 invalid argument
       ccos(), ccosf()	 (sin x sinh y) > max_float		 overflow
       ccos(), ccosf()	 (cos x cosh y) > max_float		 overflow
       cdiv(), cdivf()	 c=0 and d=0				 divide by zero
       cdiv(), cdivf()	 a=b=c=d=0				 invalid argument
       cexp(), cexpf()	 |y| = infinity 			 invalid argument
       cexp(), cexpf()	 |e**x cos y| > max_float		 overflow
       cexp(), cexpf()	 |e**x sin y| > max_float		 overflow
       cexp(), cexpf()	 |e**x cos y| < min_float		 underflow
       cexp(), cexpf()	 |e**x sin y| < min_float		 underflow
       clog(), clogf()	 y=0 and x=0				 invalid argument
       clog(), clogf()	 |x| = |y| = infinity			 invalid argument
       cpow(), cpowf()	 sqrt(a**2 + b**2) > max_float		 overflow
       cpow(), cpowf()	 c/2 * ln(a**2 + b**2) > max_float	 overflow
       cpow(), cpowf()	 c/2 * ln(a**2 + b**2)			 overflow
				- (d * atan2(b,c)) > max_float
       ---------------------------------------------------------------------------

       -----------------------------------------------------------------------------
       Value	       Data	      Hexadecimal Value      Decimal Value
       Name	       Type
       -----------------------------------------------------------------------------
       max_float       F_FLOAT	      FFFF7FFF		     1.701411e38
		       G_FLOAT	      FFFFFFFFFFFF7FFF	     8.988465674311579e307
		       S_FLOAT	      7F7FFFFF		     3.402823e38
		       T_FLOAT	      7FEFFFFFFFFFFFFF	     1.797693134862316e308
       min_float       F_FLOAT	      00000080		     2.9387359e-39
		       G_FLOAT	      0000000000000010	     5.562684646268003e-309
		       S_FLOAT	      00000001		     1.4012985e-45
		       T_FLOAT	      0000000000000001	     4.940656458412465e-324
       -----------------------------------------------------------------------------

RELATED INFORMATION

       cabs(3) delim off

																	complex(3)