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c_fma means compatible fma, using <math.h> fma when for C
proc c_fma(x, y, z: cdouble): cdouble {.importc: "fma", header: "<math.h>",
...raises: [], tags: [], forbids: [].}-
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proc c_fma(x, y, z: cfloat): cfloat {.importc: "fmaf", header: "<math.h>",
...raises: [], tags: [], forbids: [].}-
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func fma[F: SomeFloat](x, y, z: F): F {....raises: [].}-
Warning:
this fma does not touch errno and exception is discarded
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func fma[F: SomeFloat](x, y, z: F; exc: var ref Exception): F {....raises: [].}-
EXT.
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