arm/nwfpe/netwinder-fpe.rst

14   {P|M|Z} = {round to +infinity,round to -infinity,round to zero},
20 ------------------------------------------------------------
22 LDF/STF - load and store floating
30 LFM/SFM - load and store multiple floating
47 ----------------------------------------------------------------
51 FLT{cond}<S,D,E>{P,M,Z} Fn, Rd          Convert integer to floating point
52 FIX{cond}{P,M,Z} Rd, Fn                 Convert floating point to integer
76 ---------------------------------------------------
80 ADF{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - add
81 SUF{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - subtract
82 RSF{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - reverse subtract
83 MUF{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - multiply
84 DVF{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - divide
85 RDV{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - reverse divide
89 FML{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - fast multiply
90 FDV{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - fast divide
91 FRD{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - fast reverse divide
94 non-fast versions.  Hence, in this implementation their performance is
101 RMF{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - IEEE remainder
107 MVF{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - move
108 MNF{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - move negated
112 ABS{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - absolute value
113 SQT{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - square root
114 RND{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - round
118 URD{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - unnormalized round
119 NRM{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - normalize
122 instruction.  Since URD cannot return a unnormalized number, NRM becomes
123 a NOP.
127 POW{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - power
128 RPW{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - reverse power
129 POL{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - polar angle (arctan2)
131 LOG{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - logarithm to base 10
132 LGN{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - logarithm to base e
133 EXP{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - exponent
134 SIN{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - sine
135 COS{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - cosine
136 TAN{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - tangent
137 ASN{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - arcsine
138 ACS{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - arccosine
139 ATN{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - arctangent
149 have a bug in them that prevents the module from generating a SIGFPE.  This
150 is caused by a failure to alias fp_current to the kernel variable
153 The kernel provided with this distribution (vmlinux-nwfpe-0.93) contains
154 a fix for this problem and also incorporates the current version of the
156 loaded with this kernel.  It is provided as a demonstration of the
160 A module (either the one provided by Russell King, or the one in this