Tgmath.h
tgmath.h is the C standard header providing type-generic macros that select mathematical functions according to argument types.
Modern C
tgmath.h is the C standard header that provides type-generic macros for mathematical functions.
- How it is used
- Provides one type-generic interface for invoking mathematical operations across numeric argument types.
- How deep it goes
- Explains type-based dispatch and surveys function families, but defers detailed descriptions of the complete macro set.
- Examples
- Uses fabs in an iterative Heron approximation that computes multiplicative inverses and tests absolute error against a tolerance.
- What you can do after
- Apply it via <tgmath.h> macros and select established numerical operations instead of reimplementing them by hand.
Modern C, Third Edition
tgmath is the C type-generic mathematics facility that provides interfaces selecting numerical functions according to argument types.
- How it is used
- Provides type-appropriate interfaces for numerical calculations while reducing the need to select floating-point variants manually.
- How deep it goes
- Explains argument-based dispatch and implementation rationale, but does not enumerate every macro or specify dispatch mechanics in detail.
- Examples
- Uses fabs in a Heron-approximation loop that computes multiplicative inverses from command-line numbers.
- What you can do after
- Apply it via <tgmath.h> macros and choose established numerical interfaces instead of reimplementing floating-point operations.
Related concepts
- type-generic macrohas part · A type-generic macro is a macro-based interface whose expansion selects or adapts operations according to the types of its arguments or associated objects.
- sqrtused by · sqrt is a mathematical function that returns the principal square root of a nonnegative numeric value.
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