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[libreriscv.git] / ztrans_proposal.mdwn

diff --git a/ztrans_proposal.mdwn b/ztrans_proposal.mdwn
index af72e4198956b3f2989ae3e15fe317f1881c5854..5c4505555ddff4580519b72de5aa3e60257e9e5a 100644 (file)
--- a/ztrans_proposal.mdwn
+++ b/ztrans_proposal.mdwn
@@ -1,5 +1,11 @@
+**OBSOLETE**, superceded by [[openpower/transcendentals]]
+
 # Zftrans - transcendental operations
 
+Summary:
+
+*This proposal extends RISC-V scalar floating point operations to add IEEE754 transcendental functions (pow, log etc) and trigonometric functions (sin, cos etc). These functions are also 98% shared with the Khronos Group OpenCL Extended Instruction Set.*
+
 With thanks to:
 
 * Jacob Lifshay
@@ -54,7 +60,7 @@ Minimum recommended requirements for Mobile-Embedded 3D: Ztrignpi, Zftrans, with
 
 This proposal is designed to meet a wide range of extremely diverse needs,
 allowing implementors from all of them to benefit from the tools and hardware
-cost reductions associated with common standards adoption.
+cost reductions associated with common standards adoption in RISC-V (primarily IEEE754 and Vulkan).
 
 **There are *four* different, disparate platform's needs (two new)**:
 
@@ -380,7 +386,7 @@ FEXP10   | exp10       | half\_exp10 | native\_exp10 | NONE        | exp10    |
 FLOG10   | log10       | half\_log10 | native\_log10 | NONE        | log10    |
 FPOW     | pow         | NONE        | NONE          | NONE        | pow      |
 FPOWN    | pown        | NONE        | NONE          | NONE        | pown     |
-FPOWR    | powr        | NONE        | NONE          | NONE        | powr     |
+FPOWR    | powr        | half\_powr  | native\_powr  | NONE        | powr     |
 FROOTN   | rootn       | NONE        | NONE          | NONE        | rootn    |
 FHYPOT   | hypot       | NONE        | NONE          | NONE        | hypot    |
 FRECIP   | NONE        | half\_recip | native\_recip | NONE        | NONE (3) |