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

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 );

LIBRARY
  Math Library (libm)

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
  ____________________________________________________________________
			    |y| = infinity	      invalid argument

  csin(), csinf()

						      overflow

  csin(), csinf()

			    (sinh x sin y) >
			    max_float
						      overflow

  csin(), csinf()

			    (cosh x cos y) >
			    max_float
			    |y| = infinity	      invalid argument

  ccos(), ccosf()
						      overflow

  ccos(), ccosf()

			    (sin x sinh y) >
			    max_float
						      overflow

  ccos(), ccosf()

			    (cos x cosh y) >
			    max_float
			    c=0 and d=0		      divide by zero

  cdiv(), cdivf()
			    a=b=c=d=0		      invalid argument

  cdiv(), cdivf()
			    |y| = infinity	      invalid argument

  cexp(), cexpf()
						      overflow

  cexp(), cexpf()

			    |e**x cos y| >
			    max_float
						      overflow

  cexp(), cexpf()

			    |e**x sin y| >
			    max_float
						      underflow

  cexp(), cexpf()

			    |e**x cos y| <
			    min_float
						      underflow

  cexp(), cexpf()

			    |e**x sin y| <
			    min_float
			    y=0 and x=0		      invalid argument

  clog(), clogf()
			    |x| = |y| = infinity      invalid argument

  clog(), clogf()
						      overflow

  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) -
			    (d * atan2(b,c)) >
			    max_float
  ____________________________________________________________________

  __________________________________________________________________
  Value Name   Data Type   Hexadecimal Value   Decimal Value
  __________________________________________________________________
  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
  __________________________________________________________________

SEE ALSO
  cabs(3)

Index for Section 3

Alphabetical listing for C

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