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-Xuse_fp16 [Professional Edition only] [V1.05.00 or later]


This option enables the half-precision floating-point type.

[Specification format]

-Xuse_fp16[=value]

 

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Interpretation when omitted

The half-precision floating-point type is disabled.

[Detailed description]

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This option enables the half-precision floating-point type, which is a unique type extended from the C language standard.

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Specify "on" or "off" in value. If value is omitted, it is assumed that "on" has been specified.

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In the following cases, a warning will be output and this option will be ignored.

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This option is specified simultaneously with the -strict_std.

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This option is specified simultaneously with the -Xcpu=g3k option.

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This option is specified simultaneously with the -Xfloat=soft option.

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This option is specified simultaneously with the -Xround=zero option.

[Example of use]

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To enable the __fp16 type, describe as:

>ccrh -Xuse_fp16 main.c