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Open Watcom FORTRAN 77 Language Reference

Open Watcom FORTRAN 77 Language Reference

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<strong>Language</strong> <strong>Reference</strong><br />

12.3.38 Gamma Function<br />

Definition:<br />

Name:<br />

GAMMA (generic)<br />

GAMMA<br />

DGAMMA<br />

gamma(a)<br />

Usage:<br />

R ←GAMMA(R), D ←GAMMA(D)<br />

R ←GAMMA(R)<br />

D ←DGAMMA(D)<br />

12.3.39 Natural Log of Gamma Function<br />

Definition:<br />

log (gamma(a))<br />

e<br />

Name:<br />

Usage:<br />

LGAMMA (generic) R ←LGAMMA(R), D ←LGAMMA(D)<br />

ALGAMA<br />

DLGAMA<br />

R ←ALGAMA(R)<br />

D ←DLGAMA(D)<br />

12.3.40 Error Function<br />

Definition:<br />

Name:<br />

ERF (generic)<br />

ERF<br />

DERF<br />

erf(a)<br />

Usage:<br />

R ←ERF(R), D ←ERF(D)<br />

R ←ERF(R)<br />

D ←DERF(D)<br />

262 Intrinsic Functions

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