?? d_acosd.c
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#ifndef lint static char sccsid[] = "@(#)d_acosd.c 1.1 92/07/30 SMI"; /* from UCB 1.1" */#endif/* * VMS Fortran compatibility function: * arc cosine in degrees. */#include <math.h>static double pitod = 57.2957795130823208767981548141; /* 180/pi */double d_acosd(x)double *x;{ return pitod*acos(*x);}?? 快捷鍵說明
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