FMA(3G) | [FIXME: manual] | FMA(3G) |
NAME¶
fma - perform a fused multiply-add operation
DECLARATION¶
genType fma(genType a, genType b, genType c);
genDType fma(genDType a, genDType b, genDType c);
PARAMETERS¶
a
b
c
DESCRIPTION¶
fma performs, where possible, a fused multiply-add operation, returning a * b + c. In use cases where the return value is eventually consumed by a variable declared as precise:
Otherwise, in the absense of precise consumption, there are no special constraints on the number of operations or difference in precision between fma() and the expression a * b + c.
VERSION SUPPORT¶
OpenGL Shading Language Version | ||||||||||||
Function Name | 1.10 | 1.20 | 1.30 | 1.40 | 1.50 | 3.30 | 4.00 | 4.10 | 4.20 | 4.30 | 4.40 | 4.50 |
fma (genType) | - | - | - | - | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
fma (genDType) | - | - | - | - | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
COPYRIGHT¶
Copyright © 2011-2014 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/.
COPYRIGHT¶
Copyright © 2011-2014 Khronos Group
04/26/2024 | [FIXME: source] |