The following table shows the mathematical function subprograms supplied for Fortran. The arguments to the trigonometric functions must be expressed in radians.
Function Defn #args Name Arg Result -------- ---- ----- ---- --- ------ Arccosine cos-1(a) 1 ARCOS real real 1 DARCOS double double Hyperbolic Arccos cosh-1(a) 1 ACOSH real real 1 DACOSH double double Arcsine sin-1(a) 1 ARSIN real real 1 DARSIN double double Hyperbolic Arcsine sinh-1(a) 1 ASINH real real 1 DASINH double double Arctangent tan-1(a) 1 ATAN real real 1 DATAN double double tan-1(a/b) 2 ATAN2 real real 2 DATAN2 double double Hyperbolic Arctan tanh-1(a) 1 ATANH real real 1 DATANH double double Cosine cos(a) 1 COS real real 1 DCOS double double 1 CCOS complex complex Hyperbolic Cosine cosh(a) 1 COSH real real 1 DCOSH double double Cube Root a**(1/3) 1 CBRT real real 1 DCBRT double double Exponential e**a 1 EXP real real 1 DEXP double double 1 CEXP complex complex Exponential 10**a 1 EXP10 real real 1 DEXP10 double double Exponential 2**a 1 EXP2 real real 1 DEXP2 double double Exponential Complement e**a - 1. 1 EXPC real real 1 DEXPC double double Exponential Complement 2**a - 1. 1 EXPC2 real real 1 DXPC2 double double Exponential Complement 10**a - 1. 1 EXPC10 real real 1 DXPC10 double double Base 2 Logarithm log2(a) 1 ALOG2 real real 1 DLOG2 double double Common Logarithm log10(a) 1 ALOG10 real real 1 DLOG10 double double Natural Logarithm loge(a) 1 ALOG real real 1 DLOG double double 1 CLOG complex complex Power a**b 2 POW real real 2 DPOW double double Sine sin(a) 1 SIN real real 1 DSIN double double 1 CSIN complex complex Hyperbolic Sine sinh(a) 1 SINH real real 1 DSINH double double Square Root a**(1/2) 1 SQRT real real 1 DSQRT double double 1 CSQRT complex complex Tangent tan(a) 1 TAN real real 1 DTAN double double Hyperbolic Tangent tanh(a) 1 TANH real real 1 DTANH double double
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