Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30558-88b7dc3357) Lines: 1467 1530 95.9 % Date: 2025-11-26 09:22:00 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15275
_sqrtnr	22710
polrootsbound_i	27293
polrootsbound	27299
RgX_normalize1	35901
ZX_realroots_irred	48655
realroots	50627
ZX_sturm_irred	116770
ZX_sturm_i	123165
split_pols	166720
polsolve	166724
splitcauchy	166728
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	267060
QX_complex_roots	296415
_gen_zero	326136
fix_roots1	398464
conformal_mapping	467917
split_1	467919
split_0_1	468278
split_0_2	468278
logradius	493963
split_2	493969
parameters	493971
optimize_split	493972
split_fromU	493972
update_radius	493972
split_0	494337
refine_F	502354
dft	502360
all_roots	536125
clean_roots	536165
fix_roots	537224
a_posteriori_errors	537226
mygprec_special	537230
logmodulus	606749
logpre_modulus	606749
abs_update_r	778658
ind_maxlog2	902670
isexactscalar	931714
isreal	961890
initdft	996328
dual_modulus	1012454
usp	1126041
ZX_sturmpart	1128229
check_ab	1178856
tocomplex	1213957
isvalidcoeff	1230235
ZX_Uspensky	1313872
conformal_basecase	1403867
conformal_pol	1403985
fujiwara_bound_real	1406900
split_complete	1525892
homothetie	1610085
append_clone	1614170
logmin_modulus	1614758
root_error	1912570
mygprecrc_special	2179175
ZX_rescale2prim	2233790
cmp_complex_appr	2238549
fujiwara_bound	2271767
checkbound	2354842
refine_H	2460453
scalepol	4289330
mygprec_absolute	4340020
_mp_mul	4374603
logmax_modulus	4450828
splitpoleval	5235684
bkeval_single_power	5235998
newton_polygon	5507164
X2XP1	5990379
_mp_sqr	6298457
dblexp	6548984
quicktofp	6979094
RgX_gtofp_bit	7031519
abs_update	8005267
mydbllogr	9546619
homothetie2n	9957583
_gen_nored	11204721
eval_rel_pol	13138193
fft	14159097
_gen_one	14474193
ZX_to_ZiX	16455772
pol_to_gaussint	17588987
_mp_add	24662952
_mp_cmul	34770956
myshiftrc	35506126
homothetie_gauss	36496632
lower_bound	40955873
findpower	40956327
graeffe	49507681
mydbllog2r	56181236
mygprec	63756836
ZiX_sqr	99031745
myshiftic	135825359
mygprecrc	215184735
mydbllog2i	226436672
dbllog2	302109600

Generated by: LCOV version 1.16