Index for Section 3

Alphabetical listing for C

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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)

Index for Section 3

Alphabetical listing for C

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