C64x+ IQMath Library - A Virtual Floating Point Engine




Texas Instruments TMS320C64x+ IQmath Library is collection of highly optimized and high precision mathematical Function Library for C/C++ programmers to seamlessly port the floating-point algorithm into fixed point code on TMS320C64x+ devices. These routines are typically used in computationally intensive real-time applications where optimal execution speed & high accuracy is critical. By using these routines you can achieve execution speeds considerable faster than equivalent code written in standard ANSI C language. In addition, by providing ready-to-use high precision functions, TI IQmath library can shorten significantly your DSP application development time. The IQmath library release also includes example implementation of complex FFT and FIR kernels using the IQmath kernels.


Source Code - Performance for algorithms using IQMath can be further improved by inlining the IQMath kernels. Inlining is a compiler technique that relies on availability of source code for kernels. Compiler can better utilize CPU resources by inserting the kernel source at the location where the function is invoked and then pipelining the processing. To allow users to realize the improved performance, the IQMath release package includes source for many key kernels. To assist users to realize the best performance for the algorithms, TI provides the entire source code for IQMath SW library.

  • Request - To obtain access to the IQMath source code, please select REQUEST above. Access to entire IQMath source code is provided after approval.
  • Important - A Company or University e-mail address is required for this request to be granted.


Driver or library

C64P_IQMATH C64x+ IQMath library - BINARIES - formerly SPRC542 (no approval required)

Download options

C64P_IQMATH C64x+ IQMath library - BINARIES - formerly SPRC542 (no approval required)

Latest version
Release date: 19 May 2011
Driver or library


Supported products & hardware

Supported products & hardware

Digital signal processors (DSPs)
TMS320C6457 Communications infrastructure digital signal processor TMS320C6474 Multicore Digital Signal Processor TMS320DM648 Digital Media Processor

Technical documentation

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Type Title Date
User guide TMS320C64x+ IQmath Library User's Guide Dec. 01, 2008

Related design resources

Software development

SPRC590 C64x+IQMathLibrary Simulink Blocks

Support & training

TI E2E™ forums with technical support from TI engineers

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