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Diffstat (limited to 'sys/gio/ncarutil/autograph/agfpbn.f')
| -rw-r--r-- | sys/gio/ncarutil/autograph/agfpbn.f | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/sys/gio/ncarutil/autograph/agfpbn.f b/sys/gio/ncarutil/autograph/agfpbn.f new file mode 100644 index 00000000..f4900b60 --- /dev/null +++ b/sys/gio/ncarutil/autograph/agfpbn.f @@ -0,0 +1,37 @@ +C +C +C +-----------------------------------------------------------------+ +C | | +C | Copyright (C) 1986 by UCAR | +C | University Corporation for Atmospheric Research | +C | All Rights Reserved | +C | | +C | NCARGRAPHICS Version 1.00 | +C | | +C +-----------------------------------------------------------------+ +C +C +C --------------------------------------------------------------------- +C + INTEGER FUNCTION AGFPBN (FPDP) +C +C The value of AGFPBN(FPDP) is a binary dash pattern, obtained from the +C floating-point dash pattern FPDP. On machines having a word length +C greater than 16 bits, AGFPBN(FPDP) = IFIX(FPDP). On machines having +C a word length of 16 bits, this is not true. For example, when FPDP = +C 65535. (2 to the 16th minus 1), the equivalent binary dash pattern +C does not have the value 65535, but the value -1 (assuming integers +C are represented in a ones' complement format). So, the functions +C ISHIFT and IOR must be used to generate the dash pattern. +C + TEMP=FPDP + AGFPBN=0 +C + DO 101 I=1,16 + IF (AMOD(TEMP,2.).GE.1.) AGFPBN=IOR(AGFPBN,ISHIFT(1,I-1)) + TEMP=TEMP/2. + 101 CONTINUE +C + RETURN +C + END |