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TechNotes
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1992-01-28
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636b
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29 lines
=============================================================================
icalc - a complex-number expression parser
by Martin W Scott
=============================================================================
Technical notes
=============================================================================
Principal value ranges
----------------------
The PVRs are defined as follows:
asin: if u + iv = asin(z), then
-PI/2 <= u <= PI/2 if v >= 0
-PI/2 < u < PI/2 if v < 0
acos: if u + iv = acos(z), then
0 <= u <= PI if v >= 0
0 < u < PI if v < 0
atan: if u + iv = atan(z), then
-PI/2 < u < PI/2