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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 dou- ble_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. tab(@); lfHB lfHB lfHB l l l . _ 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 _ tab(@); lfHB lfHB lfHB lfHB lfHB lfHB lfHB lfHB l l l l . _ 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)